Home / 28,691.30-43,035.28-12,892.25

Finding the Fourth Proportional to 28,691.30, 43,035.28 and 12,892.25

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Solution

The fourth proportional to 28,691.30, 43,035.28 and 12,892.25 is: 19,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.30 : 43,035.28 = 12,892.25 : x
  2. Step 2: Convert to fraction form
    28,691.30/43,035.28 = 12,892.25/x
  3. Step 3: Cross multiply
    28,691.30x = 43,035.28 × 12,892.25
  4. Step 4: Simplify right side
    28,691.30x = 554,821,588.58
  5. Step 5: Solve for x
    x = 554,821,588.58/28,691.30
  6. Step 6: Final answer
    x = 19,337.62

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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.