Home / 22,016.45-30,380.70-12,457.20

Finding the Fourth Proportional to 22,016.45, 30,380.70 and 12,457.20

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Solution

The fourth proportional to 22,016.45, 30,380.70 and 12,457.20 is: 17,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,016.45 : 30,380.70 = 12,457.20 : x
  2. Step 2: Convert to fraction form
    22,016.45/30,380.70 = 12,457.20/x
  3. Step 3: Cross multiply
    22,016.45x = 30,380.70 × 12,457.20
  4. Step 4: Simplify right side
    22,016.45x = 378,458,456.04
  5. Step 5: Solve for x
    x = 378,458,456.04/22,016.45
  6. Step 6: Final answer
    x = 17,189.80

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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.