Home / 24,129.70-36,171.86-12,439.78

Finding the Fourth Proportional to 24,129.70, 36,171.86 and 12,439.78

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Solution

The fourth proportional to 24,129.70, 36,171.86 and 12,439.78 is: 18,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,129.70 : 36,171.86 = 12,439.78 : x
  2. Step 2: Convert to fraction form
    24,129.70/36,171.86 = 12,439.78/x
  3. Step 3: Cross multiply
    24,129.70x = 36,171.86 × 12,439.78
  4. Step 4: Simplify right side
    24,129.70x = 449,969,980.59
  5. Step 5: Solve for x
    x = 449,969,980.59/24,129.70
  6. Step 6: Final answer
    x = 18,647.97

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1.5x scale

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.