Home / 28,115.16-42,180.08-8,393.72

Finding the Fourth Proportional to 28,115.16, 42,180.08 and 8,393.72

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Solution

The fourth proportional to 28,115.16, 42,180.08 and 8,393.72 is: 12,592.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.16 : 42,180.08 = 8,393.72 : x
  2. Step 2: Convert to fraction form
    28,115.16/42,180.08 = 8,393.72/x
  3. Step 3: Cross multiply
    28,115.16x = 42,180.08 × 8,393.72
  4. Step 4: Simplify right side
    28,115.16x = 354,047,781.10
  5. Step 5: Solve for x
    x = 354,047,781.10/28,115.16
  6. Step 6: Final answer
    x = 12,592.77

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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.