Home / 38,456.80-57,685.20-12,169.60

Finding the Fourth Proportional to 38,456.80, 57,685.20 and 12,169.60

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Solution

The fourth proportional to 38,456.80, 57,685.20 and 12,169.60 is: 18,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,456.80 : 57,685.20 = 12,169.60 : x
  2. Step 2: Convert to fraction form
    38,456.80/57,685.20 = 12,169.60/x
  3. Step 3: Cross multiply
    38,456.80x = 57,685.20 × 12,169.60
  4. Step 4: Simplify right side
    38,456.80x = 702,005,809.92
  5. Step 5: Solve for x
    x = 702,005,809.92/38,456.80
  6. Step 6: Final answer
    x = 18,254.40

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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.