Home / 38,423.13-57,643.95-12,127.79

Finding the Fourth Proportional to 38,423.13, 57,643.95 and 12,127.79

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Solution

The fourth proportional to 38,423.13, 57,643.95 and 12,127.79 is: 18,194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,423.13 : 57,643.95 = 12,127.79 : x
  2. Step 2: Convert to fraction form
    38,423.13/57,643.95 = 12,127.79/x
  3. Step 3: Cross multiply
    38,423.13x = 57,643.95 × 12,127.79
  4. Step 4: Simplify right side
    38,423.13x = 699,093,909.96
  5. Step 5: Solve for x
    x = 699,093,909.96/38,423.13
  6. Step 6: Final answer
    x = 18,194.61

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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.