Home / 21,911.79-32,876.18-8,767.92

Finding the Fourth Proportional to 21,911.79, 32,876.18 and 8,767.92

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Solution

The fourth proportional to 21,911.79, 32,876.18 and 8,767.92 is: 13,155.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.79 : 32,876.18 = 8,767.92 : x
  2. Step 2: Convert to fraction form
    21,911.79/32,876.18 = 8,767.92/x
  3. Step 3: Cross multiply
    21,911.79x = 32,876.18 × 8,767.92
  4. Step 4: Simplify right side
    21,911.79x = 288,255,573.68
  5. Step 5: Solve for x
    x = 288,255,573.68/21,911.79
  6. Step 6: Final answer
    x = 13,155.28

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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.