Home / 20,868.92-31,281.50-9,766.26

Finding the Fourth Proportional to 20,868.92, 31,281.50 and 9,766.26

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Solution

The fourth proportional to 20,868.92, 31,281.50 and 9,766.26 is: 14,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.92 : 31,281.50 = 9,766.26 : x
  2. Step 2: Convert to fraction form
    20,868.92/31,281.50 = 9,766.26/x
  3. Step 3: Cross multiply
    20,868.92x = 31,281.50 × 9,766.26
  4. Step 4: Simplify right side
    20,868.92x = 305,503,262.19
  5. Step 5: Solve for x
    x = 305,503,262.19/20,868.92
  6. Step 6: Final answer
    x = 14,639.15

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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.