Home / 20,696.32-28,561.92-12,198.72

Finding the Fourth Proportional to 20,696.32, 28,561.92 and 12,198.72

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Solution

The fourth proportional to 20,696.32, 28,561.92 and 12,198.72 is: 16,834.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.32 : 28,561.92 = 12,198.72 : x
  2. Step 2: Convert to fraction form
    20,696.32/28,561.92 = 12,198.72/x
  3. Step 3: Cross multiply
    20,696.32x = 28,561.92 × 12,198.72
  4. Step 4: Simplify right side
    20,696.32x = 348,418,864.74
  5. Step 5: Solve for x
    x = 348,418,864.74/20,696.32
  6. Step 6: Final answer
    x = 16,834.82

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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.