Home / 38,478.39-57,724.88-12,180.93

Finding the Fourth Proportional to 38,478.39, 57,724.88 and 12,180.93

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Solution

The fourth proportional to 38,478.39, 57,724.88 and 12,180.93 is: 18,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,478.39 : 57,724.88 = 12,180.93 : x
  2. Step 2: Convert to fraction form
    38,478.39/57,724.88 = 12,180.93/x
  3. Step 3: Cross multiply
    38,478.39x = 57,724.88 × 12,180.93
  4. Step 4: Simplify right side
    38,478.39x = 703,142,661.63
  5. Step 5: Solve for x
    x = 703,142,661.63/38,478.39
  6. Step 6: Final answer
    x = 18,273.70

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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.