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Finding the Fourth Proportional to 38,602.76, 53,274.30 and 21,608.96

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Solution

The fourth proportional to 38,602.76, 53,274.30 and 21,608.96 is: 29,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,602.76 : 53,274.30 = 21,608.96 : x
  2. Step 2: Convert to fraction form
    38,602.76/53,274.30 = 21,608.96/x
  3. Step 3: Cross multiply
    38,602.76x = 53,274.30 × 21,608.96
  4. Step 4: Simplify right side
    38,602.76x = 1,151,202,217.73
  5. Step 5: Solve for x
    x = 1,151,202,217.73/38,602.76
  6. Step 6: Final answer
    x = 29,821.76

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Half scale
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Double scale
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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.