Home / 41,980.11-62,952.39-12,390.00

Finding the Fourth Proportional to 41,980.11, 62,952.39 and 12,390.00

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Solution

The fourth proportional to 41,980.11, 62,952.39 and 12,390.00 is: 18,579.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,980.11 : 62,952.39 = 12,390.00 : x
  2. Step 2: Convert to fraction form
    41,980.11/62,952.39 = 12,390.00/x
  3. Step 3: Cross multiply
    41,980.11x = 62,952.39 × 12,390.00
  4. Step 4: Simplify right side
    41,980.11x = 779,979,876.03
  5. Step 5: Solve for x
    x = 779,979,876.03/41,980.11
  6. Step 6: Final answer
    x = 18,579.75

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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.