Home / 15,716.07-21,722.85-13,813.38

Finding the Fourth Proportional to 15,716.07, 21,722.85 and 13,813.38

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Solution

The fourth proportional to 15,716.07, 21,722.85 and 13,813.38 is: 19,092.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,716.07 : 21,722.85 = 13,813.38 : x
  2. Step 2: Convert to fraction form
    15,716.07/21,722.85 = 13,813.38/x
  3. Step 3: Cross multiply
    15,716.07x = 21,722.85 × 13,813.38
  4. Step 4: Simplify right side
    15,716.07x = 300,065,981.73
  5. Step 5: Solve for x
    x = 300,065,981.73/15,716.07
  6. Step 6: Final answer
    x = 19,092.94

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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.