Home / 20,649.73-28,496.65-11,218.29

Finding the Fourth Proportional to 20,649.73, 28,496.65 and 11,218.29

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Solution

The fourth proportional to 20,649.73, 28,496.65 and 11,218.29 is: 15,481.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.73 : 28,496.65 = 11,218.29 : x
  2. Step 2: Convert to fraction form
    20,649.73/28,496.65 = 11,218.29/x
  3. Step 3: Cross multiply
    20,649.73x = 28,496.65 × 11,218.29
  4. Step 4: Simplify right side
    20,649.73x = 319,683,644.88
  5. Step 5: Solve for x
    x = 319,683,644.88/20,649.73
  6. Step 6: Final answer
    x = 15,481.25

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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.