Home / 20,211.81-27,882.27-13,506.43

Finding the Fourth Proportional to 20,211.81, 27,882.27 and 13,506.43

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Solution

The fourth proportional to 20,211.81, 27,882.27 and 13,506.43 is: 18,632.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.81 : 27,882.27 = 13,506.43 : x
  2. Step 2: Convert to fraction form
    20,211.81/27,882.27 = 13,506.43/x
  3. Step 3: Cross multiply
    20,211.81x = 27,882.27 × 13,506.43
  4. Step 4: Simplify right side
    20,211.81x = 376,589,858.29
  5. Step 5: Solve for x
    x = 376,589,858.29/20,211.81
  6. Step 6: Final answer
    x = 18,632.17

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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.