Home / 20,110.68-27,752.54-11,158.20

Finding the Fourth Proportional to 20,110.68, 27,752.54 and 11,158.20

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Solution

The fourth proportional to 20,110.68, 27,752.54 and 11,158.20 is: 15,398.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.68 : 27,752.54 = 11,158.20 : x
  2. Step 2: Convert to fraction form
    20,110.68/27,752.54 = 11,158.20/x
  3. Step 3: Cross multiply
    20,110.68x = 27,752.54 × 11,158.20
  4. Step 4: Simplify right side
    20,110.68x = 309,668,391.83
  5. Step 5: Solve for x
    x = 309,668,391.83/20,110.68
  6. Step 6: Final answer
    x = 15,398.21

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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.