Home / 18,128.88-27,186.81-6,279.45

Finding the Fourth Proportional to 18,128.88, 27,186.81 and 6,279.45

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Solution

The fourth proportional to 18,128.88, 27,186.81 and 6,279.45 is: 9,416.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.88 : 27,186.81 = 6,279.45 : x
  2. Step 2: Convert to fraction form
    18,128.88/27,186.81 = 6,279.45/x
  3. Step 3: Cross multiply
    18,128.88x = 27,186.81 × 6,279.45
  4. Step 4: Simplify right side
    18,128.88x = 170,718,214.05
  5. Step 5: Solve for x
    x = 170,718,214.05/18,128.88
  6. Step 6: Final answer
    x = 9,416.92

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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.