Home / 28,139.72-38,842.62-16,207.88

Finding the Fourth Proportional to 28,139.72, 38,842.62 and 16,207.88

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Solution

The fourth proportional to 28,139.72, 38,842.62 and 16,207.88 is: 22,372.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.72 : 38,842.62 = 16,207.88 : x
  2. Step 2: Convert to fraction form
    28,139.72/38,842.62 = 16,207.88/x
  3. Step 3: Cross multiply
    28,139.72x = 38,842.62 × 16,207.88
  4. Step 4: Simplify right side
    28,139.72x = 629,556,523.85
  5. Step 5: Solve for x
    x = 629,556,523.85/28,139.72
  6. Step 6: Final answer
    x = 22,372.52

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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.