Home / 20,649.34-28,496.19-11,217.88

Finding the Fourth Proportional to 20,649.34, 28,496.19 and 11,217.88

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Solution

The fourth proportional to 20,649.34, 28,496.19 and 11,217.88 is: 15,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.34 : 28,496.19 = 11,217.88 : x
  2. Step 2: Convert to fraction form
    20,649.34/28,496.19 = 11,217.88/x
  3. Step 3: Cross multiply
    20,649.34x = 28,496.19 × 11,217.88
  4. Step 4: Simplify right side
    20,649.34x = 319,666,839.88
  5. Step 5: Solve for x
    x = 319,666,839.88/20,649.34
  6. Step 6: Final answer
    x = 15,480.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.