Home / 20,684.97-31,019.15-10,818.97

Finding the Fourth Proportional to 20,684.97, 31,019.15 and 10,818.97

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Solution

The fourth proportional to 20,684.97, 31,019.15 and 10,818.97 is: 16,224.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.97 : 31,019.15 = 10,818.97 : x
  2. Step 2: Convert to fraction form
    20,684.97/31,019.15 = 10,818.97/x
  3. Step 3: Cross multiply
    20,684.97x = 31,019.15 × 10,818.97
  4. Step 4: Simplify right side
    20,684.97x = 335,595,202.78
  5. Step 5: Solve for x
    x = 335,595,202.78/20,684.97
  6. Step 6: Final answer
    x = 16,224.11

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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.