Home / 20,310.67-27,966.41-17,778.61

Finding the Fourth Proportional to 20,310.67, 27,966.41 and 17,778.61

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Solution

The fourth proportional to 20,310.67, 27,966.41 and 17,778.61 is: 24,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.67 : 27,966.41 = 17,778.61 : x
  2. Step 2: Convert to fraction form
    20,310.67/27,966.41 = 17,778.61/x
  3. Step 3: Cross multiply
    20,310.67x = 27,966.41 × 17,778.61
  4. Step 4: Simplify right side
    20,310.67x = 497,203,896.49
  5. Step 5: Solve for x
    x = 497,203,896.49/20,310.67
  6. Step 6: Final answer
    x = 24,479.94

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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.