Home / 21,125.53-29,151.22-12,625.98

Finding the Fourth Proportional to 21,125.53, 29,151.22 and 12,625.98

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Solution

The fourth proportional to 21,125.53, 29,151.22 and 12,625.98 is: 17,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.53 : 29,151.22 = 12,625.98 : x
  2. Step 2: Convert to fraction form
    21,125.53/29,151.22 = 12,625.98/x
  3. Step 3: Cross multiply
    21,125.53x = 29,151.22 × 12,625.98
  4. Step 4: Simplify right side
    21,125.53x = 368,062,720.70
  5. Step 5: Solve for x
    x = 368,062,720.70/21,125.53
  6. Step 6: Final answer
    x = 17,422.65

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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.