Home / 10,979.10-16,471.74-4,409.90

Finding the Fourth Proportional to 10,979.10, 16,471.74 and 4,409.90

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Solution

The fourth proportional to 10,979.10, 16,471.74 and 4,409.90 is: 6,616.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.10 : 16,471.74 = 4,409.90 : x
  2. Step 2: Convert to fraction form
    10,979.10/16,471.74 = 4,409.90/x
  3. Step 3: Cross multiply
    10,979.10x = 16,471.74 × 4,409.90
  4. Step 4: Simplify right side
    10,979.10x = 72,638,726.23
  5. Step 5: Solve for x
    x = 72,638,726.23/10,979.10
  6. Step 6: Final answer
    x = 6,616.09

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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.