Home / 18,210.72-27,326.69-7,680.09

Finding the Fourth Proportional to 18,210.72, 27,326.69 and 7,680.09

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Solution

The fourth proportional to 18,210.72, 27,326.69 and 7,680.09 is: 11,524.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,210.72 : 27,326.69 = 7,680.09 : x
  2. Step 2: Convert to fraction form
    18,210.72/27,326.69 = 7,680.09/x
  3. Step 3: Cross multiply
    18,210.72x = 27,326.69 × 7,680.09
  4. Step 4: Simplify right side
    18,210.72x = 209,871,438.60
  5. Step 5: Solve for x
    x = 209,871,438.60/18,210.72
  6. Step 6: Final answer
    x = 11,524.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.