Home / 20,853.80-31,280.76-10,463.12

Finding the Fourth Proportional to 20,853.80, 31,280.76 and 10,463.12

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Solution

The fourth proportional to 20,853.80, 31,280.76 and 10,463.12 is: 15,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.80 : 31,280.76 = 10,463.12 : x
  2. Step 2: Convert to fraction form
    20,853.80/31,280.76 = 10,463.12/x
  3. Step 3: Cross multiply
    20,853.80x = 31,280.76 × 10,463.12
  4. Step 4: Simplify right side
    20,853.80x = 327,294,345.57
  5. Step 5: Solve for x
    x = 327,294,345.57/20,853.80
  6. Step 6: Final answer
    x = 15,694.71

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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.