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Finding the Fourth Proportional to 13,360.47, 20,044.12 and 7,818.47

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Solution

The fourth proportional to 13,360.47, 20,044.12 and 7,818.47 is: 11,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.47 : 20,044.12 = 7,818.47 : x
  2. Step 2: Convert to fraction form
    13,360.47/20,044.12 = 7,818.47/x
  3. Step 3: Cross multiply
    13,360.47x = 20,044.12 × 7,818.47
  4. Step 4: Simplify right side
    13,360.47x = 156,714,350.90
  5. Step 5: Solve for x
    x = 156,714,350.90/13,360.47
  6. Step 6: Final answer
    x = 11,729.70

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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.