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Finding the Fourth Proportional to 30,165.31, 41,600.87 and 18,835.84

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Solution

The fourth proportional to 30,165.31, 41,600.87 and 18,835.84 is: 25,976.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,165.31 : 41,600.87 = 18,835.84 : x
  2. Step 2: Convert to fraction form
    30,165.31/41,600.87 = 18,835.84/x
  3. Step 3: Cross multiply
    30,165.31x = 41,600.87 × 18,835.84
  4. Step 4: Simplify right side
    30,165.31x = 783,587,123.18
  5. Step 5: Solve for x
    x = 783,587,123.18/30,165.31
  6. Step 6: Final answer
    x = 25,976.44

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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.