Home / 28,079.11-42,124.74-8,359.26

Finding the Fourth Proportional to 28,079.11, 42,124.74 and 8,359.26

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Solution

The fourth proportional to 28,079.11, 42,124.74 and 8,359.26 is: 12,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.11 : 42,124.74 = 8,359.26 : x
  2. Step 2: Convert to fraction form
    28,079.11/42,124.74 = 8,359.26/x
  3. Step 3: Cross multiply
    28,079.11x = 42,124.74 × 8,359.26
  4. Step 4: Simplify right side
    28,079.11x = 352,131,654.09
  5. Step 5: Solve for x
    x = 352,131,654.09/28,079.11
  6. Step 6: Final answer
    x = 12,540.70

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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.