Home / 30,221.28-45,306-11,743.20

Finding the Fourth Proportional to 30,221.28, 45,306 and 11,743.20

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Solution

The fourth proportional to 30,221.28, 45,306 and 11,743.20 is: 17,604.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.28 : 45,306 = 11,743.20 : x
  2. Step 2: Convert to fraction form
    30,221.28/45,306 = 11,743.20/x
  3. Step 3: Cross multiply
    30,221.28x = 45,306 × 11,743.20
  4. Step 4: Simplify right side
    30,221.28x = 532,037,419.20
  5. Step 5: Solve for x
    x = 532,037,419.20/30,221.28
  6. Step 6: Final answer
    x = 17,604.73

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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.