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Finding the Fourth Proportional to 13,992.71, 20,996.34 and 6,199.70

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Solution

The fourth proportional to 13,992.71, 20,996.34 and 6,199.70 is: 9,302.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.71 : 20,996.34 = 6,199.70 : x
  2. Step 2: Convert to fraction form
    13,992.71/20,996.34 = 6,199.70/x
  3. Step 3: Cross multiply
    13,992.71x = 20,996.34 × 6,199.70
  4. Step 4: Simplify right side
    13,992.71x = 130,170,904.12
  5. Step 5: Solve for x
    x = 130,170,904.12/13,992.71
  6. Step 6: Final answer
    x = 9,302.77

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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.