Home / 20,776.62-31,169.25-9,086.70

Finding the Fourth Proportional to 20,776.62, 31,169.25 and 9,086.70

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Solution

The fourth proportional to 20,776.62, 31,169.25 and 9,086.70 is: 13,631.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.62 : 31,169.25 = 9,086.70 : x
  2. Step 2: Convert to fraction form
    20,776.62/31,169.25 = 9,086.70/x
  3. Step 3: Cross multiply
    20,776.62x = 31,169.25 × 9,086.70
  4. Step 4: Simplify right side
    20,776.62x = 283,225,623.98
  5. Step 5: Solve for x
    x = 283,225,623.98/20,776.62
  6. Step 6: Final answer
    x = 13,631.94

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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.