Home / 11,105.19-15,322.64-6,630.39

Finding the Fourth Proportional to 11,105.19, 15,322.64 and 6,630.39

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Solution

The fourth proportional to 11,105.19, 15,322.64 and 6,630.39 is: 9,148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.19 : 15,322.64 = 6,630.39 : x
  2. Step 2: Convert to fraction form
    11,105.19/15,322.64 = 6,630.39/x
  3. Step 3: Cross multiply
    11,105.19x = 15,322.64 × 6,630.39
  4. Step 4: Simplify right side
    11,105.19x = 101,595,045.88
  5. Step 5: Solve for x
    x = 101,595,045.88/11,105.19
  6. Step 6: Final answer
    x = 9,148.43

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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.