Home / 13,779.22-19,015.23-7,491.60

Finding the Fourth Proportional to 13,779.22, 19,015.23 and 7,491.60

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Solution

The fourth proportional to 13,779.22, 19,015.23 and 7,491.60 is: 10,338.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.22 : 19,015.23 = 7,491.60 : x
  2. Step 2: Convert to fraction form
    13,779.22/19,015.23 = 7,491.60/x
  3. Step 3: Cross multiply
    13,779.22x = 19,015.23 × 7,491.60
  4. Step 4: Simplify right side
    13,779.22x = 142,454,401.99
  5. Step 5: Solve for x
    x = 142,454,401.99/13,779.22
  6. Step 6: Final answer
    x = 10,338.35

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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.