Home / 20,078.06-27,706.47-11,125.04

Finding the Fourth Proportional to 20,078.06, 27,706.47 and 11,125.04

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Solution

The fourth proportional to 20,078.06, 27,706.47 and 11,125.04 is: 15,351.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.06 : 27,706.47 = 11,125.04 : x
  2. Step 2: Convert to fraction form
    20,078.06/27,706.47 = 11,125.04/x
  3. Step 3: Cross multiply
    20,078.06x = 27,706.47 × 11,125.04
  4. Step 4: Simplify right side
    20,078.06x = 308,235,587.01
  5. Step 5: Solve for x
    x = 308,235,587.01/20,078.06
  6. Step 6: Final answer
    x = 15,351.86

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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.