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Finding the Fourth Proportional to 13,699.53, 20,623.95 and 9,344.43

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Solution

The fourth proportional to 13,699.53, 20,623.95 and 9,344.43 is: 14,067.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.53 : 20,623.95 = 9,344.43 : x
  2. Step 2: Convert to fraction form
    13,699.53/20,623.95 = 9,344.43/x
  3. Step 3: Cross multiply
    13,699.53x = 20,623.95 × 9,344.43
  4. Step 4: Simplify right side
    13,699.53x = 192,719,057.10
  5. Step 5: Solve for x
    x = 192,719,057.10/13,699.53
  6. Step 6: Final answer
    x = 14,067.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.