Home / 39,138.21-58,715.82-12,841.95

Finding the Fourth Proportional to 39,138.21, 58,715.82 and 12,841.95

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Solution

The fourth proportional to 39,138.21, 58,715.82 and 12,841.95 is: 19,265.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138.21 : 58,715.82 = 12,841.95 : x
  2. Step 2: Convert to fraction form
    39,138.21/58,715.82 = 12,841.95/x
  3. Step 3: Cross multiply
    39,138.21x = 58,715.82 × 12,841.95
  4. Step 4: Simplify right side
    39,138.21x = 754,025,624.65
  5. Step 5: Solve for x
    x = 754,025,624.65/39,138.21
  6. Step 6: Final answer
    x = 19,265.72

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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.