Home / 12,378.38-18,567.66-5,811.98

Finding the Fourth Proportional to 12,378.38, 18,567.66 and 5,811.98

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Solution

The fourth proportional to 12,378.38, 18,567.66 and 5,811.98 is: 8,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.38 : 18,567.66 = 5,811.98 : x
  2. Step 2: Convert to fraction form
    12,378.38/18,567.66 = 5,811.98/x
  3. Step 3: Cross multiply
    12,378.38x = 18,567.66 × 5,811.98
  4. Step 4: Simplify right side
    12,378.38x = 107,914,868.57
  5. Step 5: Solve for x
    x = 107,914,868.57/12,378.38
  6. Step 6: Final answer
    x = 8,718.01

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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.