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Finding the Fourth Proportional to 11,319.41, 15,621.05 and 6,351.41

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Solution

The fourth proportional to 11,319.41, 15,621.05 and 6,351.41 is: 8,765.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.41 : 15,621.05 = 6,351.41 : x
  2. Step 2: Convert to fraction form
    11,319.41/15,621.05 = 6,351.41/x
  3. Step 3: Cross multiply
    11,319.41x = 15,621.05 × 6,351.41
  4. Step 4: Simplify right side
    11,319.41x = 99,215,615.08
  5. Step 5: Solve for x
    x = 99,215,615.08/11,319.41
  6. Step 6: Final answer
    x = 8,765.09

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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.