Home / 20,631.78-30,950.10-6,588

Finding the Fourth Proportional to 20,631.78, 30,950.10 and 6,588

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Solution

The fourth proportional to 20,631.78, 30,950.10 and 6,588 is: 9,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.78 : 30,950.10 = 6,588 : x
  2. Step 2: Convert to fraction form
    20,631.78/30,950.10 = 6,588/x
  3. Step 3: Cross multiply
    20,631.78x = 30,950.10 × 6,588
  4. Step 4: Simplify right side
    20,631.78x = 203,899,258.80
  5. Step 5: Solve for x
    x = 203,899,258.80/20,631.78
  6. Step 6: Final answer
    x = 9,882.78

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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.