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Finding the Fourth Proportional to 15,003.68, 20,695.92 and 10,520.96

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Solution

The fourth proportional to 15,003.68, 20,695.92 and 10,520.96 is: 14,512.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.68 : 20,695.92 = 10,520.96 : x
  2. Step 2: Convert to fraction form
    15,003.68/20,695.92 = 10,520.96/x
  3. Step 3: Cross multiply
    15,003.68x = 20,695.92 × 10,520.96
  4. Step 4: Simplify right side
    15,003.68x = 217,740,946.48
  5. Step 5: Solve for x
    x = 217,740,946.48/15,003.68
  6. Step 6: Final answer
    x = 14,512.50

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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.