Home / 38,129.13-52,620.28-21,135.38

Finding the Fourth Proportional to 38,129.13, 52,620.28 and 21,135.38

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Solution

The fourth proportional to 38,129.13, 52,620.28 and 21,135.38 is: 29,167.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,129.13 : 52,620.28 = 21,135.38 : x
  2. Step 2: Convert to fraction form
    38,129.13/52,620.28 = 21,135.38/x
  3. Step 3: Cross multiply
    38,129.13x = 52,620.28 × 21,135.38
  4. Step 4: Simplify right side
    38,129.13x = 1,112,149,712.44
  5. Step 5: Solve for x
    x = 1,112,149,712.44/38,129.13
  6. Step 6: Final answer
    x = 29,167.98

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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.