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Finding the Fourth Proportional to 38,469.74, 53,084.77 and 21,472.49

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Solution

The fourth proportional to 38,469.74, 53,084.77 and 21,472.49 is: 29,630.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,469.74 : 53,084.77 = 21,472.49 : x
  2. Step 2: Convert to fraction form
    38,469.74/53,084.77 = 21,472.49/x
  3. Step 3: Cross multiply
    38,469.74x = 53,084.77 × 21,472.49
  4. Step 4: Simplify right side
    38,469.74x = 1,139,862,272.01
  5. Step 5: Solve for x
    x = 1,139,862,272.01/38,469.74
  6. Step 6: Final answer
    x = 29,630.10

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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.