Home / 22,605.88-31,189.68-13,172.64

Finding the Fourth Proportional to 22,605.88, 31,189.68 and 13,172.64

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Solution

The fourth proportional to 22,605.88, 31,189.68 and 13,172.64 is: 18,174.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,605.88 : 31,189.68 = 13,172.64 : x
  2. Step 2: Convert to fraction form
    22,605.88/31,189.68 = 13,172.64/x
  3. Step 3: Cross multiply
    22,605.88x = 31,189.68 × 13,172.64
  4. Step 4: Simplify right side
    22,605.88x = 410,850,426.36
  5. Step 5: Solve for x
    x = 410,850,426.36/22,605.88
  6. Step 6: Final answer
    x = 18,174.49

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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.