Home / 21,639.44-29,857.25-13,141.32

Finding the Fourth Proportional to 21,639.44, 29,857.25 and 13,141.32

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Solution

The fourth proportional to 21,639.44, 29,857.25 and 13,141.32 is: 18,131.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.44 : 29,857.25 = 13,141.32 : x
  2. Step 2: Convert to fraction form
    21,639.44/29,857.25 = 13,141.32/x
  3. Step 3: Cross multiply
    21,639.44x = 29,857.25 × 13,141.32
  4. Step 4: Simplify right side
    21,639.44x = 392,363,610.86
  5. Step 5: Solve for x
    x = 392,363,610.86/21,639.44
  6. Step 6: Final answer
    x = 18,131.88

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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.