Home / 20,108.13-27,749.96-12,148.82

Finding the Fourth Proportional to 20,108.13, 27,749.96 and 12,148.82

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Solution

The fourth proportional to 20,108.13, 27,749.96 and 12,148.82 is: 16,765.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.13 : 27,749.96 = 12,148.82 : x
  2. Step 2: Convert to fraction form
    20,108.13/27,749.96 = 12,148.82/x
  3. Step 3: Cross multiply
    20,108.13x = 27,749.96 × 12,148.82
  4. Step 4: Simplify right side
    20,108.13x = 337,129,069.55
  5. Step 5: Solve for x
    x = 337,129,069.55/20,108.13
  6. Step 6: Final answer
    x = 16,765.81

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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.