Home / 20,938.06-28,895.07-11,506.87

Finding the Fourth Proportional to 20,938.06, 28,895.07 and 11,506.87

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Solution

The fourth proportional to 20,938.06, 28,895.07 and 11,506.87 is: 15,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.06 : 28,895.07 = 11,506.87 : x
  2. Step 2: Convert to fraction form
    20,938.06/28,895.07 = 11,506.87/x
  3. Step 3: Cross multiply
    20,938.06x = 28,895.07 × 11,506.87
  4. Step 4: Simplify right side
    20,938.06x = 332,491,814.13
  5. Step 5: Solve for x
    x = 332,491,814.13/20,938.06
  6. Step 6: Final answer
    x = 15,879.78

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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.