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Finding the Fourth Proportional to 18,326.37, 27,490.07 and 6,478.47

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Solution

The fourth proportional to 18,326.37, 27,490.07 and 6,478.47 is: 9,717.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.37 : 27,490.07 = 6,478.47 : x
  2. Step 2: Convert to fraction form
    18,326.37/27,490.07 = 6,478.47/x
  3. Step 3: Cross multiply
    18,326.37x = 27,490.07 × 6,478.47
  4. Step 4: Simplify right side
    18,326.37x = 178,093,593.79
  5. Step 5: Solve for x
    x = 178,093,593.79/18,326.37
  6. Step 6: Final answer
    x = 9,717.89

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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.