Home / 14,266.39-19,687.68-7,978.75

Finding the Fourth Proportional to 14,266.39, 19,687.68 and 7,978.75

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Solution

The fourth proportional to 14,266.39, 19,687.68 and 7,978.75 is: 11,010.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,266.39 : 19,687.68 = 7,978.75 : x
  2. Step 2: Convert to fraction form
    14,266.39/19,687.68 = 7,978.75/x
  3. Step 3: Cross multiply
    14,266.39x = 19,687.68 × 7,978.75
  4. Step 4: Simplify right side
    14,266.39x = 157,083,076.80
  5. Step 5: Solve for x
    x = 157,083,076.80/14,266.39
  6. Step 6: Final answer
    x = 11,010.71

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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.