Home / 22,722.05-31,351.68-13,767.81

Finding the Fourth Proportional to 22,722.05, 31,351.68 and 13,767.81

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Solution

The fourth proportional to 22,722.05, 31,351.68 and 13,767.81 is: 18,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,722.05 : 31,351.68 = 13,767.81 : x
  2. Step 2: Convert to fraction form
    22,722.05/31,351.68 = 13,767.81/x
  3. Step 3: Cross multiply
    22,722.05x = 31,351.68 × 13,767.81
  4. Step 4: Simplify right side
    22,722.05x = 431,643,973.42
  5. Step 5: Solve for x
    x = 431,643,973.42/22,722.05
  6. Step 6: Final answer
    x = 18,996.70

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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.