Home / 22,351.95-30,846.42-12,920.55

Finding the Fourth Proportional to 22,351.95, 30,846.42 and 12,920.55

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Solution

The fourth proportional to 22,351.95, 30,846.42 and 12,920.55 is: 17,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,351.95 : 30,846.42 = 12,920.55 : x
  2. Step 2: Convert to fraction form
    22,351.95/30,846.42 = 12,920.55/x
  3. Step 3: Cross multiply
    22,351.95x = 30,846.42 × 12,920.55
  4. Step 4: Simplify right side
    22,351.95x = 398,552,711.93
  5. Step 5: Solve for x
    x = 398,552,711.93/22,351.95
  6. Step 6: Final answer
    x = 17,830.78

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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.