Home / 38,699.28-58,029.68-12,400.61

Finding the Fourth Proportional to 38,699.28, 58,029.68 and 12,400.61

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Solution

The fourth proportional to 38,699.28, 58,029.68 and 12,400.61 is: 18,594.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,699.28 : 58,029.68 = 12,400.61 : x
  2. Step 2: Convert to fraction form
    38,699.28/58,029.68 = 12,400.61/x
  3. Step 3: Cross multiply
    38,699.28x = 58,029.68 × 12,400.61
  4. Step 4: Simplify right side
    38,699.28x = 719,603,170.96
  5. Step 5: Solve for x
    x = 719,603,170.96/38,699.28
  6. Step 6: Final answer
    x = 18,594.74

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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.