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Finding the Fourth Proportional to 30,115.76, 41,560.02 and 16,687.17

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Solution

The fourth proportional to 30,115.76, 41,560.02 and 16,687.17 is: 23,028.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.76 : 41,560.02 = 16,687.17 : x
  2. Step 2: Convert to fraction form
    30,115.76/41,560.02 = 16,687.17/x
  3. Step 3: Cross multiply
    30,115.76x = 41,560.02 × 16,687.17
  4. Step 4: Simplify right side
    30,115.76x = 693,519,118.94
  5. Step 5: Solve for x
    x = 693,519,118.94/30,115.76
  6. Step 6: Final answer
    x = 23,028.45

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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.