Home / 21,649.66-29,873.33-13,147.36

Finding the Fourth Proportional to 21,649.66, 29,873.33 and 13,147.36

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Solution

The fourth proportional to 21,649.66, 29,873.33 and 13,147.36 is: 18,141.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.66 : 29,873.33 = 13,147.36 : x
  2. Step 2: Convert to fraction form
    21,649.66/29,873.33 = 13,147.36/x
  3. Step 3: Cross multiply
    21,649.66x = 29,873.33 × 13,147.36
  4. Step 4: Simplify right side
    21,649.66x = 392,755,391.04
  5. Step 5: Solve for x
    x = 392,755,391.04/21,649.66
  6. Step 6: Final answer
    x = 18,141.41

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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.