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Finding the Fourth Proportional to 11,124.30, 15,351.03 and 6,408.30

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Solution

The fourth proportional to 11,124.30, 15,351.03 and 6,408.30 is: 8,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,124.30 : 15,351.03 = 6,408.30 : x
  2. Step 2: Convert to fraction form
    11,124.30/15,351.03 = 6,408.30/x
  3. Step 3: Cross multiply
    11,124.30x = 15,351.03 × 6,408.30
  4. Step 4: Simplify right side
    11,124.30x = 98,374,005.55
  5. Step 5: Solve for x
    x = 98,374,005.55/11,124.30
  6. Step 6: Final answer
    x = 8,843.16

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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.