Home / 19,515.11-26,930.84-11,131.61

Finding the Fourth Proportional to 19,515.11, 26,930.84 and 11,131.61

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Solution

The fourth proportional to 19,515.11, 26,930.84 and 11,131.61 is: 15,361.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,515.11 : 26,930.84 = 11,131.61 : x
  2. Step 2: Convert to fraction form
    19,515.11/26,930.84 = 11,131.61/x
  3. Step 3: Cross multiply
    19,515.11x = 26,930.84 × 11,131.61
  4. Step 4: Simplify right side
    19,515.11x = 299,783,417.54
  5. Step 5: Solve for x
    x = 299,783,417.54/19,515.11
  6. Step 6: Final answer
    x = 15,361.61

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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.