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Finding the Fourth Proportional to 19,338.32, 26,691.72 and 11,882

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Solution

The fourth proportional to 19,338.32, 26,691.72 and 11,882 is: 16,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,338.32 : 26,691.72 = 11,882 : x
  2. Step 2: Convert to fraction form
    19,338.32/26,691.72 = 11,882/x
  3. Step 3: Cross multiply
    19,338.32x = 26,691.72 × 11,882
  4. Step 4: Simplify right side
    19,338.32x = 317,151,017.04
  5. Step 5: Solve for x
    x = 317,151,017.04/19,338.32
  6. Step 6: Final answer
    x = 16,400.13

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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.