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Finding the Fourth Proportional to 22,343.88, 30,832.23 and 13,391.16

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Solution

The fourth proportional to 22,343.88, 30,832.23 and 13,391.16 is: 18,478.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,343.88 : 30,832.23 = 13,391.16 : x
  2. Step 2: Convert to fraction form
    22,343.88/30,832.23 = 13,391.16/x
  3. Step 3: Cross multiply
    22,343.88x = 30,832.23 × 13,391.16
  4. Step 4: Simplify right side
    22,343.88x = 412,879,325.09
  5. Step 5: Solve for x
    x = 412,879,325.09/22,343.88
  6. Step 6: Final answer
    x = 18,478.41

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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.