Home / 15,132.32-20,876.85-9,387.11

Finding the Fourth Proportional to 15,132.32, 20,876.85 and 9,387.11

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Solution

The fourth proportional to 15,132.32, 20,876.85 and 9,387.11 is: 12,950.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.32 : 20,876.85 = 9,387.11 : x
  2. Step 2: Convert to fraction form
    15,132.32/20,876.85 = 9,387.11/x
  3. Step 3: Cross multiply
    15,132.32x = 20,876.85 × 9,387.11
  4. Step 4: Simplify right side
    15,132.32x = 195,973,287.40
  5. Step 5: Solve for x
    x = 195,973,287.40/15,132.32
  6. Step 6: Final answer
    x = 12,950.64

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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.