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Finding the Fourth Proportional to 37,423.60, 56,128.20 and 11,129.20

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Solution

The fourth proportional to 37,423.60, 56,128.20 and 11,129.20 is: 16,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,423.60 : 56,128.20 = 11,129.20 : x
  2. Step 2: Convert to fraction form
    37,423.60/56,128.20 = 11,129.20/x
  3. Step 3: Cross multiply
    37,423.60x = 56,128.20 × 11,129.20
  4. Step 4: Simplify right side
    37,423.60x = 624,661,963.44
  5. Step 5: Solve for x
    x = 624,661,963.44/37,423.60
  6. Step 6: Final answer
    x = 16,691.66

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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.