Home / 28,115.18-42,180.06-8,393.72

Finding the Fourth Proportional to 28,115.18, 42,180.06 and 8,393.72

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Solution

The fourth proportional to 28,115.18, 42,180.06 and 8,393.72 is: 12,592.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.18 : 42,180.06 = 8,393.72 : x
  2. Step 2: Convert to fraction form
    28,115.18/42,180.06 = 8,393.72/x
  3. Step 3: Cross multiply
    28,115.18x = 42,180.06 × 8,393.72
  4. Step 4: Simplify right side
    28,115.18x = 354,047,613.22
  5. Step 5: Solve for x
    x = 354,047,613.22/28,115.18
  6. Step 6: Final answer
    x = 12,592.76

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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.