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Finding the Fourth Proportional to 18,439.71, 27,636.41 and 7,897.32

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Solution

The fourth proportional to 18,439.71, 27,636.41 and 7,897.32 is: 11,836.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.71 : 27,636.41 = 7,897.32 : x
  2. Step 2: Convert to fraction form
    18,439.71/27,636.41 = 7,897.32/x
  3. Step 3: Cross multiply
    18,439.71x = 27,636.41 × 7,897.32
  4. Step 4: Simplify right side
    18,439.71x = 218,253,533.93
  5. Step 5: Solve for x
    x = 218,253,533.93/18,439.71
  6. Step 6: Final answer
    x = 11,836.06

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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.