Home / 22,251.38-30,706.90-12,315.38

Finding the Fourth Proportional to 22,251.38, 30,706.90 and 12,315.38

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Solution

The fourth proportional to 22,251.38, 30,706.90 and 12,315.38 is: 16,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,251.38 : 30,706.90 = 12,315.38 : x
  2. Step 2: Convert to fraction form
    22,251.38/30,706.90 = 12,315.38/x
  3. Step 3: Cross multiply
    22,251.38x = 30,706.90 × 12,315.38
  4. Step 4: Simplify right side
    22,251.38x = 378,166,957.80
  5. Step 5: Solve for x
    x = 378,166,957.80/22,251.38
  6. Step 6: Final answer
    x = 16,995.22

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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.