Home / 13,287.28-19,930.92-5,487.52

Finding the Fourth Proportional to 13,287.28, 19,930.92 and 5,487.52

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Solution

The fourth proportional to 13,287.28, 19,930.92 and 5,487.52 is: 8,231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.28 : 19,930.92 = 5,487.52 : x
  2. Step 2: Convert to fraction form
    13,287.28/19,930.92 = 5,487.52/x
  3. Step 3: Cross multiply
    13,287.28x = 19,930.92 × 5,487.52
  4. Step 4: Simplify right side
    13,287.28x = 109,371,322.12
  5. Step 5: Solve for x
    x = 109,371,322.12/13,287.28
  6. Step 6: Final answer
    x = 8,231.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.