Home / 15,672.11-21,628.97-8,956.42

Finding the Fourth Proportional to 15,672.11, 21,628.97 and 8,956.42

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Solution

The fourth proportional to 15,672.11, 21,628.97 and 8,956.42 is: 12,360.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.11 : 21,628.97 = 8,956.42 : x
  2. Step 2: Convert to fraction form
    15,672.11/21,628.97 = 8,956.42/x
  3. Step 3: Cross multiply
    15,672.11x = 21,628.97 × 8,956.42
  4. Step 4: Simplify right side
    15,672.11x = 193,718,215.95
  5. Step 5: Solve for x
    x = 193,718,215.95/15,672.11
  6. Step 6: Final answer
    x = 12,360.70

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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.