Home / 20,115.19-27,760.28-11,617.67

Finding the Fourth Proportional to 20,115.19, 27,760.28 and 11,617.67

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Solution

The fourth proportional to 20,115.19, 27,760.28 and 11,617.67 is: 16,033.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.19 : 27,760.28 = 11,617.67 : x
  2. Step 2: Convert to fraction form
    20,115.19/27,760.28 = 11,617.67/x
  3. Step 3: Cross multiply
    20,115.19x = 27,760.28 × 11,617.67
  4. Step 4: Simplify right side
    20,115.19x = 322,509,772.15
  5. Step 5: Solve for x
    x = 322,509,772.15/20,115.19
  6. Step 6: Final answer
    x = 16,033.15

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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.