Home / 22,711.11-31,338.72-13,151.19

Finding the Fourth Proportional to 22,711.11, 31,338.72 and 13,151.19

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Solution

The fourth proportional to 22,711.11, 31,338.72 and 13,151.19 is: 18,147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.11 : 31,338.72 = 13,151.19 : x
  2. Step 2: Convert to fraction form
    22,711.11/31,338.72 = 13,151.19/x
  3. Step 3: Cross multiply
    22,711.11x = 31,338.72 × 13,151.19
  4. Step 4: Simplify right side
    22,711.11x = 412,141,238.63
  5. Step 5: Solve for x
    x = 412,141,238.63/22,711.11
  6. Step 6: Final answer
    x = 18,147.12

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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.