Home / 22,188.96-30,620.18-12,116.88

Finding the Fourth Proportional to 22,188.96, 30,620.18 and 12,116.88

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Solution

The fourth proportional to 22,188.96, 30,620.18 and 12,116.88 is: 16,720.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.96 : 30,620.18 = 12,116.88 : x
  2. Step 2: Convert to fraction form
    22,188.96/30,620.18 = 12,116.88/x
  3. Step 3: Cross multiply
    22,188.96x = 30,620.18 × 12,116.88
  4. Step 4: Simplify right side
    22,188.96x = 371,020,986.05
  5. Step 5: Solve for x
    x = 371,020,986.05/22,188.96
  6. Step 6: Final answer
    x = 16,720.97

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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.