Home / 21,577.13-29,775.33-12,146.30

Finding the Fourth Proportional to 21,577.13, 29,775.33 and 12,146.30

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Solution

The fourth proportional to 21,577.13, 29,775.33 and 12,146.30 is: 16,761.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,577.13 : 29,775.33 = 12,146.30 : x
  2. Step 2: Convert to fraction form
    21,577.13/29,775.33 = 12,146.30/x
  3. Step 3: Cross multiply
    21,577.13x = 29,775.33 × 12,146.30
  4. Step 4: Simplify right side
    21,577.13x = 361,660,090.78
  5. Step 5: Solve for x
    x = 361,660,090.78/21,577.13
  6. Step 6: Final answer
    x = 16,761.27

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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.