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Finding the Fourth Proportional to 13,697.62, 20,515.29 and 10,717.49

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Solution

The fourth proportional to 13,697.62, 20,515.29 and 10,717.49 is: 16,051.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.62 : 20,515.29 = 10,717.49 : x
  2. Step 2: Convert to fraction form
    13,697.62/20,515.29 = 10,717.49/x
  3. Step 3: Cross multiply
    13,697.62x = 20,515.29 × 10,717.49
  4. Step 4: Simplify right side
    13,697.62x = 219,872,388.63
  5. Step 5: Solve for x
    x = 219,872,388.63/13,697.62
  6. Step 6: Final answer
    x = 16,051.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.