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Finding the Fourth Proportional to 30,144.80, 41,600.40 and 16,716.80

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Solution

The fourth proportional to 30,144.80, 41,600.40 and 16,716.80 is: 23,069.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,144.80 : 41,600.40 = 16,716.80 : x
  2. Step 2: Convert to fraction form
    30,144.80/41,600.40 = 16,716.80/x
  3. Step 3: Cross multiply
    30,144.80x = 41,600.40 × 16,716.80
  4. Step 4: Simplify right side
    30,144.80x = 695,425,566.72
  5. Step 5: Solve for x
    x = 695,425,566.72/30,144.80
  6. Step 6: Final answer
    x = 23,069.50

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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.