Home / 20,649.66-28,496.64-11,218.24

Finding the Fourth Proportional to 20,649.66, 28,496.64 and 11,218.24

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Solution

The fourth proportional to 20,649.66, 28,496.64 and 11,218.24 is: 15,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.66 : 28,496.64 = 11,218.24 : x
  2. Step 2: Convert to fraction form
    20,649.66/28,496.64 = 11,218.24/x
  3. Step 3: Cross multiply
    20,649.66x = 28,496.64 × 11,218.24
  4. Step 4: Simplify right side
    20,649.66x = 319,682,146.71
  5. Step 5: Solve for x
    x = 319,682,146.71/20,649.66
  6. Step 6: Final answer
    x = 15,481.23

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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.