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Finding the Fourth Proportional to 11,154.84, 15,393 and 6,118.20

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Solution

The fourth proportional to 11,154.84, 15,393 and 6,118.20 is: 8,442.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.84 : 15,393 = 6,118.20 : x
  2. Step 2: Convert to fraction form
    11,154.84/15,393 = 6,118.20/x
  3. Step 3: Cross multiply
    11,154.84x = 15,393 × 6,118.20
  4. Step 4: Simplify right side
    11,154.84x = 94,177,452.60
  5. Step 5: Solve for x
    x = 94,177,452.60/11,154.84
  6. Step 6: Final answer
    x = 8,442.74

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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.