Home / 28,781.12-43,171.62-9,061.40

Finding the Fourth Proportional to 28,781.12, 43,171.62 and 9,061.40

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Solution

The fourth proportional to 28,781.12, 43,171.62 and 9,061.40 is: 13,592.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.12 : 43,171.62 = 9,061.40 : x
  2. Step 2: Convert to fraction form
    28,781.12/43,171.62 = 9,061.40/x
  3. Step 3: Cross multiply
    28,781.12x = 43,171.62 × 9,061.40
  4. Step 4: Simplify right side
    28,781.12x = 391,195,317.47
  5. Step 5: Solve for x
    x = 391,195,317.47/28,781.12
  6. Step 6: Final answer
    x = 13,592.08

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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.