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Finding the Fourth Proportional to 30,387.60, 41,936.67 and 16,959.42

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Solution

The fourth proportional to 30,387.60, 41,936.67 and 16,959.42 is: 23,404.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.60 : 41,936.67 = 16,959.42 : x
  2. Step 2: Convert to fraction form
    30,387.60/41,936.67 = 16,959.42/x
  3. Step 3: Cross multiply
    30,387.60x = 41,936.67 × 16,959.42
  4. Step 4: Simplify right side
    30,387.60x = 711,221,599.93
  5. Step 5: Solve for x
    x = 711,221,599.93/30,387.60
  6. Step 6: Final answer
    x = 23,404.99

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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.