Home / 38,507.87-53,138.96-21,508.73

Finding the Fourth Proportional to 38,507.87, 53,138.96 and 21,508.73

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Solution

The fourth proportional to 38,507.87, 53,138.96 and 21,508.73 is: 29,680.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,507.87 : 53,138.96 = 21,508.73 : x
  2. Step 2: Convert to fraction form
    38,507.87/53,138.96 = 21,508.73/x
  3. Step 3: Cross multiply
    38,507.87x = 53,138.96 × 21,508.73
  4. Step 4: Simplify right side
    38,507.87x = 1,142,951,543.12
  5. Step 5: Solve for x
    x = 1,142,951,543.12/38,507.87
  6. Step 6: Final answer
    x = 29,680.99

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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.