Home / 13,779.26-19,015.38-7,491.63

Finding the Fourth Proportional to 13,779.26, 19,015.38 and 7,491.63

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Solution

The fourth proportional to 13,779.26, 19,015.38 and 7,491.63 is: 10,338.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.26 : 19,015.38 = 7,491.63 : x
  2. Step 2: Convert to fraction form
    13,779.26/19,015.38 = 7,491.63/x
  3. Step 3: Cross multiply
    13,779.26x = 19,015.38 × 7,491.63
  4. Step 4: Simplify right side
    13,779.26x = 142,456,191.27
  5. Step 5: Solve for x
    x = 142,456,191.27/13,779.26
  6. Step 6: Final answer
    x = 10,338.45

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Find fourth proportional to 6,889.63, 9,507.69 and 3,745.82
Half scale
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Double scale
Find fourth proportional to 13,780.26, 19,016.76 and 7,492.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.