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Finding the Fourth Proportional to 38,354.70, 52,930.08 and 21,587.70

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Solution

The fourth proportional to 38,354.70, 52,930.08 and 21,587.70 is: 29,791.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,354.70 : 52,930.08 = 21,587.70 : x
  2. Step 2: Convert to fraction form
    38,354.70/52,930.08 = 21,587.70/x
  3. Step 3: Cross multiply
    38,354.70x = 52,930.08 × 21,587.70
  4. Step 4: Simplify right side
    38,354.70x = 1,142,638,688.02
  5. Step 5: Solve for x
    x = 1,142,638,688.02/38,354.70
  6. Step 6: Final answer
    x = 29,791.36

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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.