Home / 28,195.13-38,909.27-15,449.13

Finding the Fourth Proportional to 28,195.13, 38,909.27 and 15,449.13

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Solution

The fourth proportional to 28,195.13, 38,909.27 and 15,449.13 is: 21,319.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.13 : 38,909.27 = 15,449.13 : x
  2. Step 2: Convert to fraction form
    28,195.13/38,909.27 = 15,449.13/x
  3. Step 3: Cross multiply
    28,195.13x = 38,909.27 × 15,449.13
  4. Step 4: Simplify right side
    28,195.13x = 601,114,370.44
  5. Step 5: Solve for x
    x = 601,114,370.44/28,195.13
  6. Step 6: Final answer
    x = 21,319.79

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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.