Home / 39,139.61-58,718.52-12,842.75

Finding the Fourth Proportional to 39,139.61, 58,718.52 and 12,842.75

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Solution

The fourth proportional to 39,139.61, 58,718.52 and 12,842.75 is: 19,267.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.61 : 58,718.52 = 12,842.75 : x
  2. Step 2: Convert to fraction form
    39,139.61/58,718.52 = 12,842.75/x
  3. Step 3: Cross multiply
    39,139.61x = 58,718.52 × 12,842.75
  4. Step 4: Simplify right side
    39,139.61x = 754,107,419.53
  5. Step 5: Solve for x
    x = 754,107,419.53/39,139.61
  6. Step 6: Final answer
    x = 19,267.12

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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.