Home / 11,139.60-15,372.36-6,103.92

Finding the Fourth Proportional to 11,139.60, 15,372.36 and 6,103.92

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Solution

The fourth proportional to 11,139.60, 15,372.36 and 6,103.92 is: 8,423.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.60 : 15,372.36 = 6,103.92 : x
  2. Step 2: Convert to fraction form
    11,139.60/15,372.36 = 6,103.92/x
  3. Step 3: Cross multiply
    11,139.60x = 15,372.36 × 6,103.92
  4. Step 4: Simplify right side
    11,139.60x = 93,831,655.65
  5. Step 5: Solve for x
    x = 93,831,655.65/11,139.60
  6. Step 6: Final answer
    x = 8,423.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.