Home / 31,450.24-43,419.24-20,854.18

Finding the Fourth Proportional to 31,450.24, 43,419.24 and 20,854.18

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Solution

The fourth proportional to 31,450.24, 43,419.24 and 20,854.18 is: 28,790.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,450.24 : 43,419.24 = 20,854.18 : x
  2. Step 2: Convert to fraction form
    31,450.24/43,419.24 = 20,854.18/x
  3. Step 3: Cross multiply
    31,450.24x = 43,419.24 × 20,854.18
  4. Step 4: Simplify right side
    31,450.24x = 905,472,646.42
  5. Step 5: Solve for x
    x = 905,472,646.42/31,450.24
  6. Step 6: Final answer
    x = 28,790.64

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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.