Home / 20,110.35-27,750.87-11,158.23

Finding the Fourth Proportional to 20,110.35, 27,750.87 and 11,158.23

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Solution

The fourth proportional to 20,110.35, 27,750.87 and 11,158.23 is: 15,397.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.35 : 27,750.87 = 11,158.23 : x
  2. Step 2: Convert to fraction form
    20,110.35/27,750.87 = 11,158.23/x
  3. Step 3: Cross multiply
    20,110.35x = 27,750.87 × 11,158.23
  4. Step 4: Simplify right side
    20,110.35x = 309,650,590.16
  5. Step 5: Solve for x
    x = 309,650,590.16/20,110.35
  6. Step 6: Final answer
    x = 15,397.57

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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.