Home / 20,744.76-31,117.12-6,716.50

Finding the Fourth Proportional to 20,744.76, 31,117.12 and 6,716.50

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Solution

The fourth proportional to 20,744.76, 31,117.12 and 6,716.50 is: 10,074.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.76 : 31,117.12 = 6,716.50 : x
  2. Step 2: Convert to fraction form
    20,744.76/31,117.12 = 6,716.50/x
  3. Step 3: Cross multiply
    20,744.76x = 31,117.12 × 6,716.50
  4. Step 4: Simplify right side
    20,744.76x = 208,998,136.48
  5. Step 5: Solve for x
    x = 208,998,136.48/20,744.76
  6. Step 6: Final answer
    x = 10,074.74

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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.