Home / 22,312.43-30,791.14-12,880.99

Finding the Fourth Proportional to 22,312.43, 30,791.14 and 12,880.99

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Solution

The fourth proportional to 22,312.43, 30,791.14 and 12,880.99 is: 17,775.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,312.43 : 30,791.14 = 12,880.99 : x
  2. Step 2: Convert to fraction form
    22,312.43/30,791.14 = 12,880.99/x
  3. Step 3: Cross multiply
    22,312.43x = 30,791.14 × 12,880.99
  4. Step 4: Simplify right side
    22,312.43x = 396,620,366.43
  5. Step 5: Solve for x
    x = 396,620,366.43/22,312.43
  6. Step 6: Final answer
    x = 17,775.76

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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.