Home / 10,342.72-15,511.78-2,947.04

Finding the Fourth Proportional to 10,342.72, 15,511.78 and 2,947.04

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Solution

The fourth proportional to 10,342.72, 15,511.78 and 2,947.04 is: 4,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,342.72 : 15,511.78 = 2,947.04 : x
  2. Step 2: Convert to fraction form
    10,342.72/15,511.78 = 2,947.04/x
  3. Step 3: Cross multiply
    10,342.72x = 15,511.78 × 2,947.04
  4. Step 4: Simplify right side
    10,342.72x = 45,713,836.13
  5. Step 5: Solve for x
    x = 45,713,836.13/10,342.72
  6. Step 6: Final answer
    x = 4,419.90

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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.