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Finding the Fourth Proportional to 15,208.75, 20,988.08 and 8,584.75

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Solution

The fourth proportional to 15,208.75, 20,988.08 and 8,584.75 is: 11,846.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.75 : 20,988.08 = 8,584.75 : x
  2. Step 2: Convert to fraction form
    15,208.75/20,988.08 = 8,584.75/x
  3. Step 3: Cross multiply
    15,208.75x = 20,988.08 × 8,584.75
  4. Step 4: Simplify right side
    15,208.75x = 180,177,419.78
  5. Step 5: Solve for x
    x = 180,177,419.78/15,208.75
  6. Step 6: Final answer
    x = 11,846.96

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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.