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Finding the Fourth Proportional to 11,524.58, 15,903.74 and 6,488.78

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Solution

The fourth proportional to 11,524.58, 15,903.74 and 6,488.78 is: 8,954.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,524.58 : 15,903.74 = 6,488.78 : x
  2. Step 2: Convert to fraction form
    11,524.58/15,903.74 = 6,488.78/x
  3. Step 3: Cross multiply
    11,524.58x = 15,903.74 × 6,488.78
  4. Step 4: Simplify right side
    11,524.58x = 103,195,940.93
  5. Step 5: Solve for x
    x = 103,195,940.93/11,524.58
  6. Step 6: Final answer
    x = 8,954.42

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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.