Home / 20,397.68-30,579.24-11,031.92

Finding the Fourth Proportional to 20,397.68, 30,579.24 and 11,031.92

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Solution

The fourth proportional to 20,397.68, 30,579.24 and 11,031.92 is: 16,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.68 : 30,579.24 = 11,031.92 : x
  2. Step 2: Convert to fraction form
    20,397.68/30,579.24 = 11,031.92/x
  3. Step 3: Cross multiply
    20,397.68x = 30,579.24 × 11,031.92
  4. Step 4: Simplify right side
    20,397.68x = 337,347,729.34
  5. Step 5: Solve for x
    x = 337,347,729.34/20,397.68
  6. Step 6: Final answer
    x = 16,538.53

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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.