Home / 31,851.92-43,952.28-18,421.04

Finding the Fourth Proportional to 31,851.92, 43,952.28 and 18,421.04

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Solution

The fourth proportional to 31,851.92, 43,952.28 and 18,421.04 is: 25,419.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,851.92 : 43,952.28 = 18,421.04 : x
  2. Step 2: Convert to fraction form
    31,851.92/43,952.28 = 18,421.04/x
  3. Step 3: Cross multiply
    31,851.92x = 43,952.28 × 18,421.04
  4. Step 4: Simplify right side
    31,851.92x = 809,646,707.97
  5. Step 5: Solve for x
    x = 809,646,707.97/31,851.92
  6. Step 6: Final answer
    x = 25,419.09

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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.