Home / 21,167.32-29,201.49-13,612.24

Finding the Fourth Proportional to 21,167.32, 29,201.49 and 13,612.24

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Solution

The fourth proportional to 21,167.32, 29,201.49 and 13,612.24 is: 18,778.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.32 : 29,201.49 = 13,612.24 : x
  2. Step 2: Convert to fraction form
    21,167.32/29,201.49 = 13,612.24/x
  3. Step 3: Cross multiply
    21,167.32x = 29,201.49 × 13,612.24
  4. Step 4: Simplify right side
    21,167.32x = 397,497,690.24
  5. Step 5: Solve for x
    x = 397,497,690.24/21,167.32
  6. Step 6: Final answer
    x = 18,778.84

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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.