Home / 30,134.14-41,571.75-21,187.42

Finding the Fourth Proportional to 30,134.14, 41,571.75 and 21,187.42

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Solution

The fourth proportional to 30,134.14, 41,571.75 and 21,187.42 is: 29,229.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,134.14 : 41,571.75 = 21,187.42 : x
  2. Step 2: Convert to fraction form
    30,134.14/41,571.75 = 21,187.42/x
  3. Step 3: Cross multiply
    30,134.14x = 41,571.75 × 21,187.42
  4. Step 4: Simplify right side
    30,134.14x = 880,798,127.39
  5. Step 5: Solve for x
    x = 880,798,127.39/30,134.14
  6. Step 6: Final answer
    x = 29,229.24

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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.