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Finding the Fourth Proportional to 15,204.87, 20,958.89 and 13,982.87

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Solution

The fourth proportional to 15,204.87, 20,958.89 and 13,982.87 is: 19,274.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,204.87 : 20,958.89 = 13,982.87 : x
  2. Step 2: Convert to fraction form
    15,204.87/20,958.89 = 13,982.87/x
  3. Step 3: Cross multiply
    15,204.87x = 20,958.89 × 13,982.87
  4. Step 4: Simplify right side
    15,204.87x = 293,065,416.70
  5. Step 5: Solve for x
    x = 293,065,416.70/15,204.87
  6. Step 6: Final answer
    x = 19,274.44

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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.