Home / 12,126.39-18,151.11-7,956.51

Finding the Fourth Proportional to 12,126.39, 18,151.11 and 7,956.51

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Solution

The fourth proportional to 12,126.39, 18,151.11 and 7,956.51 is: 11,909.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.39 : 18,151.11 = 7,956.51 : x
  2. Step 2: Convert to fraction form
    12,126.39/18,151.11 = 7,956.51/x
  3. Step 3: Cross multiply
    12,126.39x = 18,151.11 × 7,956.51
  4. Step 4: Simplify right side
    12,126.39x = 144,419,488.23
  5. Step 5: Solve for x
    x = 144,419,488.23/12,126.39
  6. Step 6: Final answer
    x = 11,909.52

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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.