Home / 21,921.56-32,863.89-8,766.76

Finding the Fourth Proportional to 21,921.56, 32,863.89 and 8,766.76

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Solution

The fourth proportional to 21,921.56, 32,863.89 and 8,766.76 is: 13,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.56 : 32,863.89 = 8,766.76 : x
  2. Step 2: Convert to fraction form
    21,921.56/32,863.89 = 8,766.76/x
  3. Step 3: Cross multiply
    21,921.56x = 32,863.89 × 8,766.76
  4. Step 4: Simplify right side
    21,921.56x = 288,109,721.26
  5. Step 5: Solve for x
    x = 288,109,721.26/21,921.56
  6. Step 6: Final answer
    x = 13,142.75

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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.