Home / 39,397.20-54,388.24-30,424.56

Finding the Fourth Proportional to 39,397.20, 54,388.24 and 30,424.56

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Solution

The fourth proportional to 39,397.20, 54,388.24 and 30,424.56 is: 42,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,397.20 : 54,388.24 = 30,424.56 : x
  2. Step 2: Convert to fraction form
    39,397.20/54,388.24 = 30,424.56/x
  3. Step 3: Cross multiply
    39,397.20x = 54,388.24 × 30,424.56
  4. Step 4: Simplify right side
    39,397.20x = 1,654,738,271.17
  5. Step 5: Solve for x
    x = 1,654,738,271.17/39,397.20
  6. Step 6: Final answer
    x = 42,001.42

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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.