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Finding the Fourth Proportional to 16,388.31, 22,615.87 and 8,936.31

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Solution

The fourth proportional to 16,388.31, 22,615.87 and 8,936.31 is: 12,332.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,388.31 : 22,615.87 = 8,936.31 : x
  2. Step 2: Convert to fraction form
    16,388.31/22,615.87 = 8,936.31/x
  3. Step 3: Cross multiply
    16,388.31x = 22,615.87 × 8,936.31
  4. Step 4: Simplify right side
    16,388.31x = 202,102,425.24
  5. Step 5: Solve for x
    x = 202,102,425.24/16,388.31
  6. Step 6: Final answer
    x = 12,332.11

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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.