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Finding the Fourth Proportional to 11,143.55, 15,378.03 and 6,108.08

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Solution

The fourth proportional to 11,143.55, 15,378.03 and 6,108.08 is: 8,429.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.55 : 15,378.03 = 6,108.08 : x
  2. Step 2: Convert to fraction form
    11,143.55/15,378.03 = 6,108.08/x
  3. Step 3: Cross multiply
    11,143.55x = 15,378.03 × 6,108.08
  4. Step 4: Simplify right side
    11,143.55x = 93,930,237.48
  5. Step 5: Solve for x
    x = 93,930,237.48/11,143.55
  6. Step 6: Final answer
    x = 8,429.11

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1.5x scale

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.