Home / 21,104.94-29,125.10-12,154.02

Finding the Fourth Proportional to 21,104.94, 29,125.10 and 12,154.02

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Solution

The fourth proportional to 21,104.94, 29,125.10 and 12,154.02 is: 16,772.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.94 : 29,125.10 = 12,154.02 : x
  2. Step 2: Convert to fraction form
    21,104.94/29,125.10 = 12,154.02/x
  3. Step 3: Cross multiply
    21,104.94x = 29,125.10 × 12,154.02
  4. Step 4: Simplify right side
    21,104.94x = 353,987,047.90
  5. Step 5: Solve for x
    x = 353,987,047.90/21,104.94
  6. Step 6: Final answer
    x = 16,772.71

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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.