Home / 20,663.16-30,995.09-8,976.38

Finding the Fourth Proportional to 20,663.16, 30,995.09 and 8,976.38

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Solution

The fourth proportional to 20,663.16, 30,995.09 and 8,976.38 is: 13,464.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.16 : 30,995.09 = 8,976.38 : x
  2. Step 2: Convert to fraction form
    20,663.16/30,995.09 = 8,976.38/x
  3. Step 3: Cross multiply
    20,663.16x = 30,995.09 × 8,976.38
  4. Step 4: Simplify right side
    20,663.16x = 278,223,705.97
  5. Step 5: Solve for x
    x = 278,223,705.97/20,663.16
  6. Step 6: Final answer
    x = 13,464.72

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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.