Home / 20,047.85-27,658.56-15,449.97

Finding the Fourth Proportional to 20,047.85, 27,658.56 and 15,449.97

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Solution

The fourth proportional to 20,047.85, 27,658.56 and 15,449.97 is: 21,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.85 : 27,658.56 = 15,449.97 : x
  2. Step 2: Convert to fraction form
    20,047.85/27,658.56 = 15,449.97/x
  3. Step 3: Cross multiply
    20,047.85x = 27,658.56 × 15,449.97
  4. Step 4: Simplify right side
    20,047.85x = 427,323,922.24
  5. Step 5: Solve for x
    x = 427,323,922.24/20,047.85
  6. Step 6: Final answer
    x = 21,315.20

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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.