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Finding the Fourth Proportional to 15,137.54, 20,881.17 and 9,086.17

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Solution

The fourth proportional to 15,137.54, 20,881.17 and 9,086.17 is: 12,533.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.54 : 20,881.17 = 9,086.17 : x
  2. Step 2: Convert to fraction form
    15,137.54/20,881.17 = 9,086.17/x
  3. Step 3: Cross multiply
    15,137.54x = 20,881.17 × 9,086.17
  4. Step 4: Simplify right side
    15,137.54x = 189,729,860.42
  5. Step 5: Solve for x
    x = 189,729,860.42/15,137.54
  6. Step 6: Final answer
    x = 12,533.73

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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.