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Finding the Fourth Proportional to 10,888.20, 15,025.30 and 5,920.20

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Solution

The fourth proportional to 10,888.20, 15,025.30 and 5,920.20 is: 8,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,888.20 : 15,025.30 = 5,920.20 : x
  2. Step 2: Convert to fraction form
    10,888.20/15,025.30 = 5,920.20/x
  3. Step 3: Cross multiply
    10,888.20x = 15,025.30 × 5,920.20
  4. Step 4: Simplify right side
    10,888.20x = 88,952,781.06
  5. Step 5: Solve for x
    x = 88,952,781.06/10,888.20
  6. Step 6: Final answer
    x = 8,169.65

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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.