Home / 20,748.68-31,105.56-9,649.70

Finding the Fourth Proportional to 20,748.68, 31,105.56 and 9,649.70

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Solution

The fourth proportional to 20,748.68, 31,105.56 and 9,649.70 is: 14,466.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.68 : 31,105.56 = 9,649.70 : x
  2. Step 2: Convert to fraction form
    20,748.68/31,105.56 = 9,649.70/x
  3. Step 3: Cross multiply
    20,748.68x = 31,105.56 × 9,649.70
  4. Step 4: Simplify right side
    20,748.68x = 300,159,322.33
  5. Step 5: Solve for x
    x = 300,159,322.33/20,748.68
  6. Step 6: Final answer
    x = 14,466.43

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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.