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Finding the Fourth Proportional to 39,800.14, 54,926.04 and 21,894.82

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Solution

The fourth proportional to 39,800.14, 54,926.04 and 21,894.82 is: 30,215.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,800.14 : 54,926.04 = 21,894.82 : x
  2. Step 2: Convert to fraction form
    39,800.14/54,926.04 = 21,894.82/x
  3. Step 3: Cross multiply
    39,800.14x = 54,926.04 × 21,894.82
  4. Step 4: Simplify right side
    39,800.14x = 1,202,595,759.11
  5. Step 5: Solve for x
    x = 1,202,595,759.11/39,800.14
  6. Step 6: Final answer
    x = 30,215.87

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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.