Home / 43,619.19-65,440.13-12,456.87

Finding the Fourth Proportional to 43,619.19, 65,440.13 and 12,456.87

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Solution

The fourth proportional to 43,619.19, 65,440.13 and 12,456.87 is: 18,688.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,619.19 : 65,440.13 = 12,456.87 : x
  2. Step 2: Convert to fraction form
    43,619.19/65,440.13 = 12,456.87/x
  3. Step 3: Cross multiply
    43,619.19x = 65,440.13 × 12,456.87
  4. Step 4: Simplify right side
    43,619.19x = 815,179,129.91
  5. Step 5: Solve for x
    x = 815,179,129.91/43,619.19
  6. Step 6: Final answer
    x = 18,688.54

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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.