Home / 39,481.28-54,482.55-21,576.89

Finding the Fourth Proportional to 39,481.28, 54,482.55 and 21,576.89

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Solution

The fourth proportional to 39,481.28, 54,482.55 and 21,576.89 is: 29,775.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,481.28 : 54,482.55 = 21,576.89 : x
  2. Step 2: Convert to fraction form
    39,481.28/54,482.55 = 21,576.89/x
  3. Step 3: Cross multiply
    39,481.28x = 54,482.55 × 21,576.89
  4. Step 4: Simplify right side
    39,481.28x = 1,175,563,988.27
  5. Step 5: Solve for x
    x = 1,175,563,988.27/39,481.28
  6. Step 6: Final answer
    x = 29,775.22

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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.