Home / 18,790.38-25,920.27-11,615.40

Finding the Fourth Proportional to 18,790.38, 25,920.27 and 11,615.40

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Solution

The fourth proportional to 18,790.38, 25,920.27 and 11,615.40 is: 16,022.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.38 : 25,920.27 = 11,615.40 : x
  2. Step 2: Convert to fraction form
    18,790.38/25,920.27 = 11,615.40/x
  3. Step 3: Cross multiply
    18,790.38x = 25,920.27 × 11,615.40
  4. Step 4: Simplify right side
    18,790.38x = 301,074,304.16
  5. Step 5: Solve for x
    x = 301,074,304.16/18,790.38
  6. Step 6: Final answer
    x = 16,022.79

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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.