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Finding the Fourth Proportional to 11,550.84, 15,939.84 and 6,515.03

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Solution

The fourth proportional to 11,550.84, 15,939.84 and 6,515.03 is: 8,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,550.84 : 15,939.84 = 6,515.03 : x
  2. Step 2: Convert to fraction form
    11,550.84/15,939.84 = 6,515.03/x
  3. Step 3: Cross multiply
    11,550.84x = 15,939.84 × 6,515.03
  4. Step 4: Simplify right side
    11,550.84x = 103,848,456.10
  5. Step 5: Solve for x
    x = 103,848,456.10/11,550.84
  6. Step 6: Final answer
    x = 8,990.55

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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.