Home / 13,779.60-19,015.84-7,491.92

Finding the Fourth Proportional to 13,779.60, 19,015.84 and 7,491.92

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Solution

The fourth proportional to 13,779.60, 19,015.84 and 7,491.92 is: 10,338.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.60 : 19,015.84 = 7,491.92 : x
  2. Step 2: Convert to fraction form
    13,779.60/19,015.84 = 7,491.92/x
  3. Step 3: Cross multiply
    13,779.60x = 19,015.84 × 7,491.92
  4. Step 4: Simplify right side
    13,779.60x = 142,465,152.01
  5. Step 5: Solve for x
    x = 142,465,152.01/13,779.60
  6. Step 6: Final answer
    x = 10,338.85

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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.