Home / 22,145.67-30,560.31-13,191.12

Finding the Fourth Proportional to 22,145.67, 30,560.31 and 13,191.12

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Solution

The fourth proportional to 22,145.67, 30,560.31 and 13,191.12 is: 18,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,145.67 : 30,560.31 = 13,191.12 : x
  2. Step 2: Convert to fraction form
    22,145.67/30,560.31 = 13,191.12/x
  3. Step 3: Cross multiply
    22,145.67x = 30,560.31 × 13,191.12
  4. Step 4: Simplify right side
    22,145.67x = 403,124,716.45
  5. Step 5: Solve for x
    x = 403,124,716.45/22,145.67
  6. Step 6: Final answer
    x = 18,203.32

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Double scale
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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.