Home / 39,775.62-54,888.88-21,869.56

Finding the Fourth Proportional to 39,775.62, 54,888.88 and 21,869.56

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Solution

The fourth proportional to 39,775.62, 54,888.88 and 21,869.56 is: 30,179.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.62 : 54,888.88 = 21,869.56 : x
  2. Step 2: Convert to fraction form
    39,775.62/54,888.88 = 21,869.56/x
  3. Step 3: Cross multiply
    39,775.62x = 54,888.88 × 21,869.56
  4. Step 4: Simplify right side
    39,775.62x = 1,200,395,654.49
  5. Step 5: Solve for x
    x = 1,200,395,654.49/39,775.62
  6. Step 6: Final answer
    x = 30,179.18

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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.