Home / 20,110.48-27,752.22-11,157.89

Finding the Fourth Proportional to 20,110.48, 27,752.22 and 11,157.89

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Solution

The fourth proportional to 20,110.48, 27,752.22 and 11,157.89 is: 15,397.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.48 : 27,752.22 = 11,157.89 : x
  2. Step 2: Convert to fraction form
    20,110.48/27,752.22 = 11,157.89/x
  3. Step 3: Cross multiply
    20,110.48x = 27,752.22 × 11,157.89
  4. Step 4: Simplify right side
    20,110.48x = 309,656,079.25
  5. Step 5: Solve for x
    x = 309,656,079.25/20,110.48
  6. Step 6: Final answer
    x = 15,397.75

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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.