Home / 20,666.34-30,951.18-15,105.69

Finding the Fourth Proportional to 20,666.34, 30,951.18 and 15,105.69

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Solution

The fourth proportional to 20,666.34, 30,951.18 and 15,105.69 is: 22,623.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.34 : 30,951.18 = 15,105.69 : x
  2. Step 2: Convert to fraction form
    20,666.34/30,951.18 = 15,105.69/x
  3. Step 3: Cross multiply
    20,666.34x = 30,951.18 × 15,105.69
  4. Step 4: Simplify right side
    20,666.34x = 467,538,930.21
  5. Step 5: Solve for x
    x = 467,538,930.21/20,666.34
  6. Step 6: Final answer
    x = 22,623.21

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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.