Home / 39,836.48-54,974.70-21,931.88

Finding the Fourth Proportional to 39,836.48, 54,974.70 and 21,931.88

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Solution

The fourth proportional to 39,836.48, 54,974.70 and 21,931.88 is: 30,266.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,836.48 : 54,974.70 = 21,931.88 : x
  2. Step 2: Convert to fraction form
    39,836.48/54,974.70 = 21,931.88/x
  3. Step 3: Cross multiply
    39,836.48x = 54,974.70 × 21,931.88
  4. Step 4: Simplify right side
    39,836.48x = 1,205,698,248.56
  5. Step 5: Solve for x
    x = 1,205,698,248.56/39,836.48
  6. Step 6: Final answer
    x = 30,266.19

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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.