Home / 38,730.87-58,084.14-12,429.75

Finding the Fourth Proportional to 38,730.87, 58,084.14 and 12,429.75

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Solution

The fourth proportional to 38,730.87, 58,084.14 and 12,429.75 is: 18,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,730.87 : 58,084.14 = 12,429.75 : x
  2. Step 2: Convert to fraction form
    38,730.87/58,084.14 = 12,429.75/x
  3. Step 3: Cross multiply
    38,730.87x = 58,084.14 × 12,429.75
  4. Step 4: Simplify right side
    38,730.87x = 721,971,339.17
  5. Step 5: Solve for x
    x = 721,971,339.17/38,730.87
  6. Step 6: Final answer
    x = 18,640.72

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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.