Home / 38,980.52-58,471.32-12,685.40

Finding the Fourth Proportional to 38,980.52, 58,471.32 and 12,685.40

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Solution

The fourth proportional to 38,980.52, 58,471.32 and 12,685.40 is: 19,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,980.52 : 58,471.32 = 12,685.40 : x
  2. Step 2: Convert to fraction form
    38,980.52/58,471.32 = 12,685.40/x
  3. Step 3: Cross multiply
    38,980.52x = 58,471.32 × 12,685.40
  4. Step 4: Simplify right side
    38,980.52x = 741,732,082.73
  5. Step 5: Solve for x
    x = 741,732,082.73/38,980.52
  6. Step 6: Final answer
    x = 19,028.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.