Home / 41,979.36-62,958.72-12,389.28

Finding the Fourth Proportional to 41,979.36, 62,958.72 and 12,389.28

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Solution

The fourth proportional to 41,979.36, 62,958.72 and 12,389.28 is: 18,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,979.36 : 62,958.72 = 12,389.28 : x
  2. Step 2: Convert to fraction form
    41,979.36/62,958.72 = 12,389.28/x
  3. Step 3: Cross multiply
    41,979.36x = 62,958.72 × 12,389.28
  4. Step 4: Simplify right side
    41,979.36x = 780,013,210.52
  5. Step 5: Solve for x
    x = 780,013,210.52/41,979.36
  6. Step 6: Final answer
    x = 18,580.87

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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.