Home / 39,990.42-55,190.07-23,000.22

Finding the Fourth Proportional to 39,990.42, 55,190.07 and 23,000.22

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Solution

The fourth proportional to 39,990.42, 55,190.07 and 23,000.22 is: 31,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.42 : 55,190.07 = 23,000.22 : x
  2. Step 2: Convert to fraction form
    39,990.42/55,190.07 = 23,000.22/x
  3. Step 3: Cross multiply
    39,990.42x = 55,190.07 × 23,000.22
  4. Step 4: Simplify right side
    39,990.42x = 1,269,383,751.82
  5. Step 5: Solve for x
    x = 1,269,383,751.82/39,990.42
  6. Step 6: Final answer
    x = 31,742.20

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Double scale
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Similar ratio
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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.