Home / 11,143.92-15,378.40-6,108

Finding the Fourth Proportional to 11,143.92, 15,378.40 and 6,108

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Solution

The fourth proportional to 11,143.92, 15,378.40 and 6,108 is: 8,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.92 : 15,378.40 = 6,108 : x
  2. Step 2: Convert to fraction form
    11,143.92/15,378.40 = 6,108/x
  3. Step 3: Cross multiply
    11,143.92x = 15,378.40 × 6,108
  4. Step 4: Simplify right side
    11,143.92x = 93,931,267.20
  5. Step 5: Solve for x
    x = 93,931,267.20/11,143.92
  6. Step 6: Final answer
    x = 8,428.93

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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.