Home / 10,155.11-15,239.34-3,581.28

Finding the Fourth Proportional to 10,155.11, 15,239.34 and 3,581.28

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Solution

The fourth proportional to 10,155.11, 15,239.34 and 3,581.28 is: 5,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.11 : 15,239.34 = 3,581.28 : x
  2. Step 2: Convert to fraction form
    10,155.11/15,239.34 = 3,581.28/x
  3. Step 3: Cross multiply
    10,155.11x = 15,239.34 × 3,581.28
  4. Step 4: Simplify right side
    10,155.11x = 54,576,343.56
  5. Step 5: Solve for x
    x = 54,576,343.56/10,155.11
  6. Step 6: Final answer
    x = 5,374.28

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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.