Home / 28,839.78-43,265.79-9,119.91

Finding the Fourth Proportional to 28,839.78, 43,265.79 and 9,119.91

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Solution

The fourth proportional to 28,839.78, 43,265.79 and 9,119.91 is: 13,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,839.78 : 43,265.79 = 9,119.91 : x
  2. Step 2: Convert to fraction form
    28,839.78/43,265.79 = 9,119.91/x
  3. Step 3: Cross multiply
    28,839.78x = 43,265.79 × 9,119.91
  4. Step 4: Simplify right side
    28,839.78x = 394,580,110.88
  5. Step 5: Solve for x
    x = 394,580,110.88/28,839.78
  6. Step 6: Final answer
    x = 13,681.80

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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.