Home / 20,005.20-27,610.49-15,240.89

Finding the Fourth Proportional to 20,005.20, 27,610.49 and 15,240.89

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Solution

The fourth proportional to 20,005.20, 27,610.49 and 15,240.89 is: 21,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.20 : 27,610.49 = 15,240.89 : x
  2. Step 2: Convert to fraction form
    20,005.20/27,610.49 = 15,240.89/x
  3. Step 3: Cross multiply
    20,005.20x = 27,610.49 × 15,240.89
  4. Step 4: Simplify right side
    20,005.20x = 420,808,226.68
  5. Step 5: Solve for x
    x = 420,808,226.68/20,005.20
  6. Step 6: Final answer
    x = 21,034.94

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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.