Home / 20,109.57-27,754.53-11,159.96

Finding the Fourth Proportional to 20,109.57, 27,754.53 and 11,159.96

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Solution

The fourth proportional to 20,109.57, 27,754.53 and 11,159.96 is: 15,402.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.57 : 27,754.53 = 11,159.96 : x
  2. Step 2: Convert to fraction form
    20,109.57/27,754.53 = 11,159.96/x
  3. Step 3: Cross multiply
    20,109.57x = 27,754.53 × 11,159.96
  4. Step 4: Simplify right side
    20,109.57x = 309,739,444.62
  5. Step 5: Solve for x
    x = 309,739,444.62/20,109.57
  6. Step 6: Final answer
    x = 15,402.59

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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.