Home / 20,250.68-30,387.15-9,156.51

Finding the Fourth Proportional to 20,250.68, 30,387.15 and 9,156.51

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Solution

The fourth proportional to 20,250.68, 30,387.15 and 9,156.51 is: 13,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.68 : 30,387.15 = 9,156.51 : x
  2. Step 2: Convert to fraction form
    20,250.68/30,387.15 = 9,156.51/x
  3. Step 3: Cross multiply
    20,250.68x = 30,387.15 × 9,156.51
  4. Step 4: Simplify right side
    20,250.68x = 278,240,242.85
  5. Step 5: Solve for x
    x = 278,240,242.85/20,250.68
  6. Step 6: Final answer
    x = 13,739.80

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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.