Home / 25,020.78-37,531.23-20,318.48

Finding the Fourth Proportional to 25,020.78, 37,531.23 and 20,318.48

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Solution

The fourth proportional to 25,020.78, 37,531.23 and 20,318.48 is: 30,477.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,020.78 : 37,531.23 = 20,318.48 : x
  2. Step 2: Convert to fraction form
    25,020.78/37,531.23 = 20,318.48/x
  3. Step 3: Cross multiply
    25,020.78x = 37,531.23 × 20,318.48
  4. Step 4: Simplify right side
    25,020.78x = 762,577,358.47
  5. Step 5: Solve for x
    x = 762,577,358.47/25,020.78
  6. Step 6: Final answer
    x = 30,477.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.