Home / 20,764.90-31,142.68-5,970.52

Finding the Fourth Proportional to 20,764.90, 31,142.68 and 5,970.52

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Solution

The fourth proportional to 20,764.90, 31,142.68 and 5,970.52 is: 8,954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.90 : 31,142.68 = 5,970.52 : x
  2. Step 2: Convert to fraction form
    20,764.90/31,142.68 = 5,970.52/x
  3. Step 3: Cross multiply
    20,764.90x = 31,142.68 × 5,970.52
  4. Step 4: Simplify right side
    20,764.90x = 185,937,993.79
  5. Step 5: Solve for x
    x = 185,937,993.79/20,764.90
  6. Step 6: Final answer
    x = 8,954.44

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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.