Home / 25,163.12-34,738.08-19,788.90

Finding the Fourth Proportional to 25,163.12, 34,738.08 and 19,788.90

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Solution

The fourth proportional to 25,163.12, 34,738.08 and 19,788.90 is: 27,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,163.12 : 34,738.08 = 19,788.90 : x
  2. Step 2: Convert to fraction form
    25,163.12/34,738.08 = 19,788.90/x
  3. Step 3: Cross multiply
    25,163.12x = 34,738.08 × 19,788.90
  4. Step 4: Simplify right side
    25,163.12x = 687,428,391.31
  5. Step 5: Solve for x
    x = 687,428,391.31/25,163.12
  6. Step 6: Final answer
    x = 27,318.89

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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.