Home / 20,950.53-28,911.84-11,519.70

Finding the Fourth Proportional to 20,950.53, 28,911.84 and 11,519.70

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Solution

The fourth proportional to 20,950.53, 28,911.84 and 11,519.70 is: 15,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.53 : 28,911.84 = 11,519.70 : x
  2. Step 2: Convert to fraction form
    20,950.53/28,911.84 = 11,519.70/x
  3. Step 3: Cross multiply
    20,950.53x = 28,911.84 × 11,519.70
  4. Step 4: Simplify right side
    20,950.53x = 333,055,723.25
  5. Step 5: Solve for x
    x = 333,055,723.25/20,950.53
  6. Step 6: Final answer
    x = 15,897.25

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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.