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Finding the Fourth Proportional to 18,270.64, 27,326.80 and 10,756.32

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Solution

The fourth proportional to 18,270.64, 27,326.80 and 10,756.32 is: 16,087.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.64 : 27,326.80 = 10,756.32 : x
  2. Step 2: Convert to fraction form
    18,270.64/27,326.80 = 10,756.32/x
  3. Step 3: Cross multiply
    18,270.64x = 27,326.80 × 10,756.32
  4. Step 4: Simplify right side
    18,270.64x = 293,935,805.38
  5. Step 5: Solve for x
    x = 293,935,805.38/18,270.64
  6. Step 6: Final answer
    x = 16,087.88

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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.