Home / 42,982.21-64,470.26-11,391.57

Finding the Fourth Proportional to 42,982.21, 64,470.26 and 11,391.57

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Solution

The fourth proportional to 42,982.21, 64,470.26 and 11,391.57 is: 17,086.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,982.21 : 64,470.26 = 11,391.57 : x
  2. Step 2: Convert to fraction form
    42,982.21/64,470.26 = 11,391.57/x
  3. Step 3: Cross multiply
    42,982.21x = 64,470.26 × 11,391.57
  4. Step 4: Simplify right side
    42,982.21x = 734,417,100.40
  5. Step 5: Solve for x
    x = 734,417,100.40/42,982.21
  6. Step 6: Final answer
    x = 17,086.54

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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.