Home / 25,839.91-38,760.07-7,120.97

Finding the Fourth Proportional to 25,839.91, 38,760.07 and 7,120.97

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Solution

The fourth proportional to 25,839.91, 38,760.07 and 7,120.97 is: 10,681.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,839.91 : 38,760.07 = 7,120.97 : x
  2. Step 2: Convert to fraction form
    25,839.91/38,760.07 = 7,120.97/x
  3. Step 3: Cross multiply
    25,839.91x = 38,760.07 × 7,120.97
  4. Step 4: Simplify right side
    25,839.91x = 276,009,295.67
  5. Step 5: Solve for x
    x = 276,009,295.67/25,839.91
  6. Step 6: Final answer
    x = 10,681.51

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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.