Home / 20,950.76-28,911.66-11,519.12

Finding the Fourth Proportional to 20,950.76, 28,911.66 and 11,519.12

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Solution

The fourth proportional to 20,950.76, 28,911.66 and 11,519.12 is: 15,896.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.76 : 28,911.66 = 11,519.12 : x
  2. Step 2: Convert to fraction form
    20,950.76/28,911.66 = 11,519.12/x
  3. Step 3: Cross multiply
    20,950.76x = 28,911.66 × 11,519.12
  4. Step 4: Simplify right side
    20,950.76x = 333,036,880.94
  5. Step 5: Solve for x
    x = 333,036,880.94/20,950.76
  6. Step 6: Final answer
    x = 15,896.17

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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.