Home / 22,715.68-31,348.32-13,764.80

Finding the Fourth Proportional to 22,715.68, 31,348.32 and 13,764.80

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Solution

The fourth proportional to 22,715.68, 31,348.32 and 13,764.80 is: 18,995.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.68 : 31,348.32 = 13,764.80 : x
  2. Step 2: Convert to fraction form
    22,715.68/31,348.32 = 13,764.80/x
  3. Step 3: Cross multiply
    22,715.68x = 31,348.32 × 13,764.80
  4. Step 4: Simplify right side
    22,715.68x = 431,503,355.14
  5. Step 5: Solve for x
    x = 431,503,355.14/22,715.68
  6. Step 6: Final answer
    x = 18,995.84

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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.