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Finding the Fourth Proportional to 30,141.48, 45,131.22 and 16,974.12

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Solution

The fourth proportional to 30,141.48, 45,131.22 and 16,974.12 is: 25,415.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,141.48 : 45,131.22 = 16,974.12 : x
  2. Step 2: Convert to fraction form
    30,141.48/45,131.22 = 16,974.12/x
  3. Step 3: Cross multiply
    30,141.48x = 45,131.22 × 16,974.12
  4. Step 4: Simplify right side
    30,141.48x = 766,062,744.03
  5. Step 5: Solve for x
    x = 766,062,744.03/30,141.48
  6. Step 6: Final answer
    x = 25,415.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.