Home / 30,279.90-45,422.17-9,221.73

Finding the Fourth Proportional to 30,279.90, 45,422.17 and 9,221.73

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Solution

The fourth proportional to 30,279.90, 45,422.17 and 9,221.73 is: 13,833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.90 : 45,422.17 = 9,221.73 : x
  2. Step 2: Convert to fraction form
    30,279.90/45,422.17 = 9,221.73/x
  3. Step 3: Cross multiply
    30,279.90x = 45,422.17 × 9,221.73
  4. Step 4: Simplify right side
    30,279.90x = 418,871,049.87
  5. Step 5: Solve for x
    x = 418,871,049.87/30,279.90
  6. Step 6: Final answer
    x = 13,833.30

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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.