Home / 21,186.43-31,788.02-8,042.29

Finding the Fourth Proportional to 21,186.43, 31,788.02 and 8,042.29

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Solution

The fourth proportional to 21,186.43, 31,788.02 and 8,042.29 is: 12,066.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.43 : 31,788.02 = 8,042.29 : x
  2. Step 2: Convert to fraction form
    21,186.43/31,788.02 = 8,042.29/x
  3. Step 3: Cross multiply
    21,186.43x = 31,788.02 × 8,042.29
  4. Step 4: Simplify right side
    21,186.43x = 255,648,475.37
  5. Step 5: Solve for x
    x = 255,648,475.37/21,186.43
  6. Step 6: Final answer
    x = 12,066.61

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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.