Home / 20,680.63-31,005.82-6,632.66

Finding the Fourth Proportional to 20,680.63, 31,005.82 and 6,632.66

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Solution

The fourth proportional to 20,680.63, 31,005.82 and 6,632.66 is: 9,944.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.63 : 31,005.82 = 6,632.66 : x
  2. Step 2: Convert to fraction form
    20,680.63/31,005.82 = 6,632.66/x
  3. Step 3: Cross multiply
    20,680.63x = 31,005.82 × 6,632.66
  4. Step 4: Simplify right side
    20,680.63x = 205,651,123.01
  5. Step 5: Solve for x
    x = 205,651,123.01/20,680.63
  6. Step 6: Final answer
    x = 9,944.14

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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.