Home / 10,979.92-16,471.50-3,187.72

Finding the Fourth Proportional to 10,979.92, 16,471.50 and 3,187.72

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Solution

The fourth proportional to 10,979.92, 16,471.50 and 3,187.72 is: 4,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.92 : 16,471.50 = 3,187.72 : x
  2. Step 2: Convert to fraction form
    10,979.92/16,471.50 = 3,187.72/x
  3. Step 3: Cross multiply
    10,979.92x = 16,471.50 × 3,187.72
  4. Step 4: Simplify right side
    10,979.92x = 52,506,529.98
  5. Step 5: Solve for x
    x = 52,506,529.98/10,979.92
  6. Step 6: Final answer
    x = 4,782.05

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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.