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Finding the Fourth Proportional to 30,356.76, 41,889.78 and 16,926.96

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Solution

The fourth proportional to 30,356.76, 41,889.78 and 16,926.96 is: 23,357.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,356.76 : 41,889.78 = 16,926.96 : x
  2. Step 2: Convert to fraction form
    30,356.76/41,889.78 = 16,926.96/x
  3. Step 3: Cross multiply
    30,356.76x = 41,889.78 × 16,926.96
  4. Step 4: Simplify right side
    30,356.76x = 709,066,630.47
  5. Step 5: Solve for x
    x = 709,066,630.47/30,356.76
  6. Step 6: Final answer
    x = 23,357.78

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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.