Home / 20,846.80-31,270.20-10,456.12

Finding the Fourth Proportional to 20,846.80, 31,270.20 and 10,456.12

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Solution

The fourth proportional to 20,846.80, 31,270.20 and 10,456.12 is: 15,684.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.80 : 31,270.20 = 10,456.12 : x
  2. Step 2: Convert to fraction form
    20,846.80/31,270.20 = 10,456.12/x
  3. Step 3: Cross multiply
    20,846.80x = 31,270.20 × 10,456.12
  4. Step 4: Simplify right side
    20,846.80x = 326,964,963.62
  5. Step 5: Solve for x
    x = 326,964,963.62/20,846.80
  6. Step 6: Final answer
    x = 15,684.18

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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.