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Finding the Fourth Proportional to 15,109.92, 22,669.92 and 7,319.52

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Solution

The fourth proportional to 15,109.92, 22,669.92 and 7,319.52 is: 10,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.92 : 22,669.92 = 7,319.52 : x
  2. Step 2: Convert to fraction form
    15,109.92/22,669.92 = 7,319.52/x
  3. Step 3: Cross multiply
    15,109.92x = 22,669.92 × 7,319.52
  4. Step 4: Simplify right side
    15,109.92x = 165,932,932.84
  5. Step 5: Solve for x
    x = 165,932,932.84/15,109.92
  6. Step 6: Final answer
    x = 10,981.72

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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.