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Finding the Fourth Proportional to 15,652.53, 21,601.19 and 8,938.70

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Solution

The fourth proportional to 15,652.53, 21,601.19 and 8,938.70 is: 12,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,652.53 : 21,601.19 = 8,938.70 : x
  2. Step 2: Convert to fraction form
    15,652.53/21,601.19 = 8,938.70/x
  3. Step 3: Cross multiply
    15,652.53x = 21,601.19 × 8,938.70
  4. Step 4: Simplify right side
    15,652.53x = 193,086,404.35
  5. Step 5: Solve for x
    x = 193,086,404.35/15,652.53
  6. Step 6: Final answer
    x = 12,335.80

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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.