Home / 21,198.11-29,253.56-12,245.38

Finding the Fourth Proportional to 21,198.11, 29,253.56 and 12,245.38

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Solution

The fourth proportional to 21,198.11, 29,253.56 and 12,245.38 is: 16,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.11 : 29,253.56 = 12,245.38 : x
  2. Step 2: Convert to fraction form
    21,198.11/29,253.56 = 12,245.38/x
  3. Step 3: Cross multiply
    21,198.11x = 29,253.56 × 12,245.38
  4. Step 4: Simplify right side
    21,198.11x = 358,220,824.19
  5. Step 5: Solve for x
    x = 358,220,824.19/21,198.11
  6. Step 6: Final answer
    x = 16,898.72

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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.