Home / 38,142.85-52,640.25-21,152.43

Finding the Fourth Proportional to 38,142.85, 52,640.25 and 21,152.43

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Solution

The fourth proportional to 38,142.85, 52,640.25 and 21,152.43 is: 29,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.85 : 52,640.25 = 21,152.43 : x
  2. Step 2: Convert to fraction form
    38,142.85/52,640.25 = 21,152.43/x
  3. Step 3: Cross multiply
    38,142.85x = 52,640.25 × 21,152.43
  4. Step 4: Simplify right side
    38,142.85x = 1,113,469,203.31
  5. Step 5: Solve for x
    x = 1,113,469,203.31/38,142.85
  6. Step 6: Final answer
    x = 29,192.08

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Half 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.