Home / 13,508.10-18,641.14-7,539.72

Finding the Fourth Proportional to 13,508.10, 18,641.14 and 7,539.72

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Solution

The fourth proportional to 13,508.10, 18,641.14 and 7,539.72 is: 10,404.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.10 : 18,641.14 = 7,539.72 : x
  2. Step 2: Convert to fraction form
    13,508.10/18,641.14 = 7,539.72/x
  3. Step 3: Cross multiply
    13,508.10x = 18,641.14 × 7,539.72
  4. Step 4: Simplify right side
    13,508.10x = 140,548,965.97
  5. Step 5: Solve for x
    x = 140,548,965.97/13,508.10
  6. Step 6: Final answer
    x = 10,404.79

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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.