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Finding the Fourth Proportional to 16,212.56, 22,361.84 and 15,670.64

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Solution

The fourth proportional to 16,212.56, 22,361.84 and 15,670.64 is: 21,614.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,212.56 : 22,361.84 = 15,670.64 : x
  2. Step 2: Convert to fraction form
    16,212.56/22,361.84 = 15,670.64/x
  3. Step 3: Cross multiply
    16,212.56x = 22,361.84 × 15,670.64
  4. Step 4: Simplify right side
    16,212.56x = 350,424,344.38
  5. Step 5: Solve for x
    x = 350,424,344.38/16,212.56
  6. Step 6: Final answer
    x = 21,614.37

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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.