Home / 38,689.29-58,035.31-12,390.62

Finding the Fourth Proportional to 38,689.29, 58,035.31 and 12,390.62

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Solution

The fourth proportional to 38,689.29, 58,035.31 and 12,390.62 is: 18,586.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689.29 : 58,035.31 = 12,390.62 : x
  2. Step 2: Convert to fraction form
    38,689.29/58,035.31 = 12,390.62/x
  3. Step 3: Cross multiply
    38,689.29x = 58,035.31 × 12,390.62
  4. Step 4: Simplify right side
    38,689.29x = 719,093,151.64
  5. Step 5: Solve for x
    x = 719,093,151.64/38,689.29
  6. Step 6: Final answer
    x = 18,586.36

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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.