Home / 20,766.29-28,660.22-11,812.06

Finding the Fourth Proportional to 20,766.29, 28,660.22 and 11,812.06

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Solution

The fourth proportional to 20,766.29, 28,660.22 and 11,812.06 is: 16,302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.29 : 28,660.22 = 11,812.06 : x
  2. Step 2: Convert to fraction form
    20,766.29/28,660.22 = 11,812.06/x
  3. Step 3: Cross multiply
    20,766.29x = 28,660.22 × 11,812.06
  4. Step 4: Simplify right side
    20,766.29x = 338,536,238.25
  5. Step 5: Solve for x
    x = 338,536,238.25/20,766.29
  6. Step 6: Final answer
    x = 16,302.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.