Home / 22,186.30-30,618.33-12,115.68

Finding the Fourth Proportional to 22,186.30, 30,618.33 and 12,115.68

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Solution

The fourth proportional to 22,186.30, 30,618.33 and 12,115.68 is: 16,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,186.30 : 30,618.33 = 12,115.68 : x
  2. Step 2: Convert to fraction form
    22,186.30/30,618.33 = 12,115.68/x
  3. Step 3: Cross multiply
    22,186.30x = 30,618.33 × 12,115.68
  4. Step 4: Simplify right side
    22,186.30x = 370,961,888.41
  5. Step 5: Solve for x
    x = 370,961,888.41/22,186.30
  6. Step 6: Final answer
    x = 16,720.31

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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.