Home / 21,576.08-29,775.20-12,142.82

Finding the Fourth Proportional to 21,576.08, 29,775.20 and 12,142.82

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Solution

The fourth proportional to 21,576.08, 29,775.20 and 12,142.82 is: 16,757.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,576.08 : 29,775.20 = 12,142.82 : x
  2. Step 2: Convert to fraction form
    21,576.08/29,775.20 = 12,142.82/x
  3. Step 3: Cross multiply
    21,576.08x = 29,775.20 × 12,142.82
  4. Step 4: Simplify right side
    21,576.08x = 361,554,894.06
  5. Step 5: Solve for x
    x = 361,554,894.06/21,576.08
  6. Step 6: Final answer
    x = 16,757.21

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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.