Home / 20,650.68-30,930.66-15,440.76

Finding the Fourth Proportional to 20,650.68, 30,930.66 and 15,440.76

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Solution

The fourth proportional to 20,650.68, 30,930.66 and 15,440.76 is: 23,127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.68 : 30,930.66 = 15,440.76 : x
  2. Step 2: Convert to fraction form
    20,650.68/30,930.66 = 15,440.76/x
  3. Step 3: Cross multiply
    20,650.68x = 30,930.66 × 15,440.76
  4. Step 4: Simplify right side
    20,650.68x = 477,592,897.70
  5. Step 5: Solve for x
    x = 477,592,897.70/20,650.68
  6. Step 6: Final answer
    x = 23,127.22

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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.