Home / 20,310.17-27,965.72-17,778.11

Finding the Fourth Proportional to 20,310.17, 27,965.72 and 17,778.11

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Solution

The fourth proportional to 20,310.17, 27,965.72 and 17,778.11 is: 24,479.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.17 : 27,965.72 = 17,778.11 : x
  2. Step 2: Convert to fraction form
    20,310.17/27,965.72 = 17,778.11/x
  3. Step 3: Cross multiply
    20,310.17x = 27,965.72 × 17,778.11
  4. Step 4: Simplify right side
    20,310.17x = 497,177,646.39
  5. Step 5: Solve for x
    x = 497,177,646.39/20,310.17
  6. Step 6: Final answer
    x = 24,479.25

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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.