Home / 22,122.10-30,527.97-12,690.04

Finding the Fourth Proportional to 22,122.10, 30,527.97 and 12,690.04

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Solution

The fourth proportional to 22,122.10, 30,527.97 and 12,690.04 is: 17,511.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,122.10 : 30,527.97 = 12,690.04 : x
  2. Step 2: Convert to fraction form
    22,122.10/30,527.97 = 12,690.04/x
  3. Step 3: Cross multiply
    22,122.10x = 30,527.97 × 12,690.04
  4. Step 4: Simplify right side
    22,122.10x = 387,401,160.42
  5. Step 5: Solve for x
    x = 387,401,160.42/22,122.10
  6. Step 6: Final answer
    x = 17,511.95

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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.