Home / 21,348.15-32,008.45-8,876.78

Finding the Fourth Proportional to 21,348.15, 32,008.45 and 8,876.78

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Solution

The fourth proportional to 21,348.15, 32,008.45 and 8,876.78 is: 13,309.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.15 : 32,008.45 = 8,876.78 : x
  2. Step 2: Convert to fraction form
    21,348.15/32,008.45 = 8,876.78/x
  3. Step 3: Cross multiply
    21,348.15x = 32,008.45 × 8,876.78
  4. Step 4: Simplify right side
    21,348.15x = 284,131,968.79
  5. Step 5: Solve for x
    x = 284,131,968.79/21,348.15
  6. Step 6: Final answer
    x = 13,309.44

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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.