Home / 22,765.11-31,418.73-13,812.09

Finding the Fourth Proportional to 22,765.11, 31,418.73 and 13,812.09

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Solution

The fourth proportional to 22,765.11, 31,418.73 and 13,812.09 is: 19,062.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,765.11 : 31,418.73 = 13,812.09 : x
  2. Step 2: Convert to fraction form
    22,765.11/31,418.73 = 13,812.09/x
  3. Step 3: Cross multiply
    22,765.11x = 31,418.73 × 13,812.09
  4. Step 4: Simplify right side
    22,765.11x = 433,958,326.45
  5. Step 5: Solve for x
    x = 433,958,326.45/22,765.11
  6. Step 6: Final answer
    x = 19,062.43

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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.