Home / 20,788.28-31,184.52-6,747.72

Finding the Fourth Proportional to 20,788.28, 31,184.52 and 6,747.72

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Solution

The fourth proportional to 20,788.28, 31,184.52 and 6,747.72 is: 10,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.28 : 31,184.52 = 6,747.72 : x
  2. Step 2: Convert to fraction form
    20,788.28/31,184.52 = 6,747.72/x
  3. Step 3: Cross multiply
    20,788.28x = 31,184.52 × 6,747.72
  4. Step 4: Simplify right side
    20,788.28x = 210,424,409.29
  5. Step 5: Solve for x
    x = 210,424,409.29/20,788.28
  6. Step 6: Final answer
    x = 10,122.26

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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.