Home / 21,610.80-29,822.40-12,179.52

Finding the Fourth Proportional to 21,610.80, 29,822.40 and 12,179.52

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Solution

The fourth proportional to 21,610.80, 29,822.40 and 12,179.52 is: 16,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.80 : 29,822.40 = 12,179.52 : x
  2. Step 2: Convert to fraction form
    21,610.80/29,822.40 = 12,179.52/x
  3. Step 3: Cross multiply
    21,610.80x = 29,822.40 × 12,179.52
  4. Step 4: Simplify right side
    21,610.80x = 363,222,517.25
  5. Step 5: Solve for x
    x = 363,222,517.25/21,610.80
  6. Step 6: Final answer
    x = 16,807.45

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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.