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Finding the Fourth Proportional to 15,195.84, 20,960.02 and 13,202.98

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Solution

The fourth proportional to 15,195.84, 20,960.02 and 13,202.98 is: 18,211.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.84 : 20,960.02 = 13,202.98 : x
  2. Step 2: Convert to fraction form
    15,195.84/20,960.02 = 13,202.98/x
  3. Step 3: Cross multiply
    15,195.84x = 20,960.02 × 13,202.98
  4. Step 4: Simplify right side
    15,195.84x = 276,734,724.86
  5. Step 5: Solve for x
    x = 276,734,724.86/15,195.84
  6. Step 6: Final answer
    x = 18,211.22

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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.