Home / 22,315.19-30,794.78-12,888.95

Finding the Fourth Proportional to 22,315.19, 30,794.78 and 12,888.95

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Solution

The fourth proportional to 22,315.19, 30,794.78 and 12,888.95 is: 17,786.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,315.19 : 30,794.78 = 12,888.95 : x
  2. Step 2: Convert to fraction form
    22,315.19/30,794.78 = 12,888.95/x
  3. Step 3: Cross multiply
    22,315.19x = 30,794.78 × 12,888.95
  4. Step 4: Simplify right side
    22,315.19x = 396,912,257.93
  5. Step 5: Solve for x
    x = 396,912,257.93/22,315.19
  6. Step 6: Final answer
    x = 17,786.64

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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.