Home / 20,108.25-27,752.69-11,158.63

Finding the Fourth Proportional to 20,108.25, 27,752.69 and 11,158.63

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Solution

The fourth proportional to 20,108.25, 27,752.69 and 11,158.63 is: 15,400.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.25 : 27,752.69 = 11,158.63 : x
  2. Step 2: Convert to fraction form
    20,108.25/27,752.69 = 11,158.63/x
  3. Step 3: Cross multiply
    20,108.25x = 27,752.69 × 11,158.63
  4. Step 4: Simplify right side
    20,108.25x = 309,681,957.73
  5. Step 5: Solve for x
    x = 309,681,957.73/20,108.25
  6. Step 6: Final answer
    x = 15,400.74

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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.