Home / 18,109.76-27,159.11-12,523.34

Finding the Fourth Proportional to 18,109.76, 27,159.11 and 12,523.34

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Solution

The fourth proportional to 18,109.76, 27,159.11 and 12,523.34 is: 18,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.76 : 27,159.11 = 12,523.34 : x
  2. Step 2: Convert to fraction form
    18,109.76/27,159.11 = 12,523.34/x
  3. Step 3: Cross multiply
    18,109.76x = 27,159.11 × 12,523.34
  4. Step 4: Simplify right side
    18,109.76x = 340,122,768.63
  5. Step 5: Solve for x
    x = 340,122,768.63/18,109.76
  6. Step 6: Final answer
    x = 18,781.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.