Home / 22,715.78-31,350.74-13,763.43

Finding the Fourth Proportional to 22,715.78, 31,350.74 and 13,763.43

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Solution

The fourth proportional to 22,715.78, 31,350.74 and 13,763.43 is: 18,995.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.78 : 31,350.74 = 13,763.43 : x
  2. Step 2: Convert to fraction form
    22,715.78/31,350.74 = 13,763.43/x
  3. Step 3: Cross multiply
    22,715.78x = 31,350.74 × 13,763.43
  4. Step 4: Simplify right side
    22,715.78x = 431,493,646.62
  5. Step 5: Solve for x
    x = 431,493,646.62/22,715.78
  6. Step 6: Final answer
    x = 18,995.33

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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.