Home / 28,781.64-43,176.12-8,005.16

Finding the Fourth Proportional to 28,781.64, 43,176.12 and 8,005.16

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Solution

The fourth proportional to 28,781.64, 43,176.12 and 8,005.16 is: 12,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.64 : 43,176.12 = 8,005.16 : x
  2. Step 2: Convert to fraction form
    28,781.64/43,176.12 = 8,005.16/x
  3. Step 3: Cross multiply
    28,781.64x = 43,176.12 × 8,005.16
  4. Step 4: Simplify right side
    28,781.64x = 345,631,748.78
  5. Step 5: Solve for x
    x = 345,631,748.78/28,781.64
  6. Step 6: Final answer
    x = 12,008.76

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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.