Home / 13,397.20-18,488.24-7,428.52

Finding the Fourth Proportional to 13,397.20, 18,488.24 and 7,428.52

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Solution

The fourth proportional to 13,397.20, 18,488.24 and 7,428.52 is: 10,251.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.20 : 18,488.24 = 7,428.52 : x
  2. Step 2: Convert to fraction form
    13,397.20/18,488.24 = 7,428.52/x
  3. Step 3: Cross multiply
    13,397.20x = 18,488.24 × 7,428.52
  4. Step 4: Simplify right side
    13,397.20x = 137,340,260.60
  5. Step 5: Solve for x
    x = 137,340,260.60/13,397.20
  6. Step 6: Final answer
    x = 10,251.42

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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.