Home / 21,575.88-29,777.31-12,146.22

Finding the Fourth Proportional to 21,575.88, 29,777.31 and 12,146.22

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Solution

The fourth proportional to 21,575.88, 29,777.31 and 12,146.22 is: 16,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575.88 : 29,777.31 = 12,146.22 : x
  2. Step 2: Convert to fraction form
    21,575.88/29,777.31 = 12,146.22/x
  3. Step 3: Cross multiply
    21,575.88x = 29,777.31 × 12,146.22
  4. Step 4: Simplify right side
    21,575.88x = 361,681,758.27
  5. Step 5: Solve for x
    x = 361,681,758.27/21,575.88
  6. Step 6: Final answer
    x = 16,763.24

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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.