Home / 20,142.31-27,799.71-16,779.79

Finding the Fourth Proportional to 20,142.31, 27,799.71 and 16,779.79

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Solution

The fourth proportional to 20,142.31, 27,799.71 and 16,779.79 is: 23,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.31 : 27,799.71 = 16,779.79 : x
  2. Step 2: Convert to fraction form
    20,142.31/27,799.71 = 16,779.79/x
  3. Step 3: Cross multiply
    20,142.31x = 27,799.71 × 16,779.79
  4. Step 4: Simplify right side
    20,142.31x = 466,473,295.86
  5. Step 5: Solve for x
    x = 466,473,295.86/20,142.31
  6. Step 6: Final answer
    x = 23,158.88

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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.