Home / 21,186.19-31,772.00-8,042.32

Finding the Fourth Proportional to 21,186.19, 31,772.00 and 8,042.32

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Solution

The fourth proportional to 21,186.19, 31,772.00 and 8,042.32 is: 12,060.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.19 : 31,772.00 = 8,042.32 : x
  2. Step 2: Convert to fraction form
    21,186.19/31,772.00 = 8,042.32/x
  3. Step 3: Cross multiply
    21,186.19x = 31,772.00 × 8,042.32
  4. Step 4: Simplify right side
    21,186.19x = 255,520,550.83
  5. Step 5: Solve for x
    x = 255,520,550.83/21,186.19
  6. Step 6: Final answer
    x = 12,060.71

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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.