Home / 28,414.60-42,621.90-12,615.92

Finding the Fourth Proportional to 28,414.60, 42,621.90 and 12,615.92

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Solution

The fourth proportional to 28,414.60, 42,621.90 and 12,615.92 is: 18,923.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.60 : 42,621.90 = 12,615.92 : x
  2. Step 2: Convert to fraction form
    28,414.60/42,621.90 = 12,615.92/x
  3. Step 3: Cross multiply
    28,414.60x = 42,621.90 × 12,615.92
  4. Step 4: Simplify right side
    28,414.60x = 537,714,480.65
  5. Step 5: Solve for x
    x = 537,714,480.65/28,414.60
  6. Step 6: Final answer
    x = 18,923.88

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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.