Home / 43,780.49-65,664.20-12,187.25

Finding the Fourth Proportional to 43,780.49, 65,664.20 and 12,187.25

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Solution

The fourth proportional to 43,780.49, 65,664.20 and 12,187.25 is: 18,279.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,780.49 : 65,664.20 = 12,187.25 : x
  2. Step 2: Convert to fraction form
    43,780.49/65,664.20 = 12,187.25/x
  3. Step 3: Cross multiply
    43,780.49x = 65,664.20 × 12,187.25
  4. Step 4: Simplify right side
    43,780.49x = 800,265,632.19
  5. Step 5: Solve for x
    x = 800,265,632.19/43,780.49
  6. Step 6: Final answer
    x = 18,279.05

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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.