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Finding the Fourth Proportional to 18,064.97, 27,090.72 and 6,215.40

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Solution

The fourth proportional to 18,064.97, 27,090.72 and 6,215.40 is: 9,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,064.97 : 27,090.72 = 6,215.40 : x
  2. Step 2: Convert to fraction form
    18,064.97/27,090.72 = 6,215.40/x
  3. Step 3: Cross multiply
    18,064.97x = 27,090.72 × 6,215.40
  4. Step 4: Simplify right side
    18,064.97x = 168,379,661.09
  5. Step 5: Solve for x
    x = 168,379,661.09/18,064.97
  6. Step 6: Final answer
    x = 9,320.78

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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.