Home / 20,722.09-28,599.92-12,226.29

Finding the Fourth Proportional to 20,722.09, 28,599.92 and 12,226.29

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Solution

The fourth proportional to 20,722.09, 28,599.92 and 12,226.29 is: 16,874.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.09 : 28,599.92 = 12,226.29 : x
  2. Step 2: Convert to fraction form
    20,722.09/28,599.92 = 12,226.29/x
  3. Step 3: Cross multiply
    20,722.09x = 28,599.92 × 12,226.29
  4. Step 4: Simplify right side
    20,722.09x = 349,670,915.90
  5. Step 5: Solve for x
    x = 349,670,915.90/20,722.09
  6. Step 6: Final answer
    x = 16,874.31

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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.