Home / 36,680.90-55,020.80-11,720.61

Finding the Fourth Proportional to 36,680.90, 55,020.80 and 11,720.61

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Solution

The fourth proportional to 36,680.90, 55,020.80 and 11,720.61 is: 17,580.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,680.90 : 55,020.80 = 11,720.61 : x
  2. Step 2: Convert to fraction form
    36,680.90/55,020.80 = 11,720.61/x
  3. Step 3: Cross multiply
    36,680.90x = 55,020.80 × 11,720.61
  4. Step 4: Simplify right side
    36,680.90x = 644,877,367.99
  5. Step 5: Solve for x
    x = 644,877,367.99/36,680.90
  6. Step 6: Final answer
    x = 17,580.74

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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.