Home / 18,711.43-28,042.83-7,605.18

Finding the Fourth Proportional to 18,711.43, 28,042.83 and 7,605.18

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Solution

The fourth proportional to 18,711.43, 28,042.83 and 7,605.18 is: 11,397.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.43 : 28,042.83 = 7,605.18 : x
  2. Step 2: Convert to fraction form
    18,711.43/28,042.83 = 7,605.18/x
  3. Step 3: Cross multiply
    18,711.43x = 28,042.83 × 7,605.18
  4. Step 4: Simplify right side
    18,711.43x = 213,270,769.86
  5. Step 5: Solve for x
    x = 213,270,769.86/18,711.43
  6. Step 6: Final answer
    x = 11,397.89

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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.