Home / 38,129.08-52,616.78-21,134.90

Finding the Fourth Proportional to 38,129.08, 52,616.78 and 21,134.90

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Solution

The fourth proportional to 38,129.08, 52,616.78 and 21,134.90 is: 29,165.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,129.08 : 52,616.78 = 21,134.90 : x
  2. Step 2: Convert to fraction form
    38,129.08/52,616.78 = 21,134.90/x
  3. Step 3: Cross multiply
    38,129.08x = 52,616.78 × 21,134.90
  4. Step 4: Simplify right side
    38,129.08x = 1,112,050,383.62
  5. Step 5: Solve for x
    x = 1,112,050,383.62/38,129.08
  6. Step 6: Final answer
    x = 29,165.41

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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.