Home / 21,167.11-29,201.22-13,612.06

Finding the Fourth Proportional to 21,167.11, 29,201.22 and 13,612.06

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Solution

The fourth proportional to 21,167.11, 29,201.22 and 13,612.06 is: 18,778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.11 : 29,201.22 = 13,612.06 : x
  2. Step 2: Convert to fraction form
    21,167.11/29,201.22 = 13,612.06/x
  3. Step 3: Cross multiply
    21,167.11x = 29,201.22 × 13,612.06
  4. Step 4: Simplify right side
    21,167.11x = 397,488,758.71
  5. Step 5: Solve for x
    x = 397,488,758.71/21,167.11
  6. Step 6: Final answer
    x = 18,778.60

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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.