Home / 12,143.96-18,093.16-11,972.76

Finding the Fourth Proportional to 12,143.96, 18,093.16 and 11,972.76

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Solution

The fourth proportional to 12,143.96, 18,093.16 and 11,972.76 is: 17,838.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.96 : 18,093.16 = 11,972.76 : x
  2. Step 2: Convert to fraction form
    12,143.96/18,093.16 = 11,972.76/x
  3. Step 3: Cross multiply
    12,143.96x = 18,093.16 × 11,972.76
  4. Step 4: Simplify right side
    12,143.96x = 216,625,062.32
  5. Step 5: Solve for x
    x = 216,625,062.32/12,143.96
  6. Step 6: Final answer
    x = 17,838.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.