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Finding the Fourth Proportional to 18,477.64, 27,708.22 and 5,326.89

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Solution

The fourth proportional to 18,477.64, 27,708.22 and 5,326.89 is: 7,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477.64 : 27,708.22 = 5,326.89 : x
  2. Step 2: Convert to fraction form
    18,477.64/27,708.22 = 5,326.89/x
  3. Step 3: Cross multiply
    18,477.64x = 27,708.22 × 5,326.89
  4. Step 4: Simplify right side
    18,477.64x = 147,598,640.04
  5. Step 5: Solve for x
    x = 147,598,640.04/18,477.64
  6. Step 6: Final answer
    x = 7,987.96

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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.