Home / 20,669.38-31,000.76-5,673

Finding the Fourth Proportional to 20,669.38, 31,000.76 and 5,673

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Solution

The fourth proportional to 20,669.38, 31,000.76 and 5,673 is: 8,508.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.38 : 31,000.76 = 5,673 : x
  2. Step 2: Convert to fraction form
    20,669.38/31,000.76 = 5,673/x
  3. Step 3: Cross multiply
    20,669.38x = 31,000.76 × 5,673
  4. Step 4: Simplify right side
    20,669.38x = 175,867,311.48
  5. Step 5: Solve for x
    x = 175,867,311.48/20,669.38
  6. Step 6: Final answer
    x = 8,508.59

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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.