Home / 10,165.32-15,240.78-3,920.04

Finding the Fourth Proportional to 10,165.32, 15,240.78 and 3,920.04

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Solution

The fourth proportional to 10,165.32, 15,240.78 and 3,920.04 is: 5,877.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,165.32 : 15,240.78 = 3,920.04 : x
  2. Step 2: Convert to fraction form
    10,165.32/15,240.78 = 3,920.04/x
  3. Step 3: Cross multiply
    10,165.32x = 15,240.78 × 3,920.04
  4. Step 4: Simplify right side
    10,165.32x = 59,744,467.23
  5. Step 5: Solve for x
    x = 59,744,467.23/10,165.32
  6. Step 6: Final answer
    x = 5,877.28

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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.