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Finding the Fourth Proportional to 15,201.08, 20,975.64 and 8,487.08

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Solution

The fourth proportional to 15,201.08, 20,975.64 and 8,487.08 is: 11,711.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,201.08 : 20,975.64 = 8,487.08 : x
  2. Step 2: Convert to fraction form
    15,201.08/20,975.64 = 8,487.08/x
  3. Step 3: Cross multiply
    15,201.08x = 20,975.64 × 8,487.08
  4. Step 4: Simplify right side
    15,201.08x = 178,021,934.73
  5. Step 5: Solve for x
    x = 178,021,934.73/15,201.08
  6. Step 6: Final answer
    x = 11,711.14

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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.