Home / 22,188.36-33,218.54-20,631.40

Finding the Fourth Proportional to 22,188.36, 33,218.54 and 20,631.40

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Solution

The fourth proportional to 22,188.36, 33,218.54 and 20,631.40 is: 30,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.36 : 33,218.54 = 20,631.40 : x
  2. Step 2: Convert to fraction form
    22,188.36/33,218.54 = 20,631.40/x
  3. Step 3: Cross multiply
    22,188.36x = 33,218.54 × 20,631.40
  4. Step 4: Simplify right side
    22,188.36x = 685,344,986.16
  5. Step 5: Solve for x
    x = 685,344,986.16/22,188.36
  6. Step 6: Final answer
    x = 30,887.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.