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Finding the Fourth Proportional to 18,620.36, 27,929.82 and 6,308.36

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Solution

The fourth proportional to 18,620.36, 27,929.82 and 6,308.36 is: 9,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.36 : 27,929.82 = 6,308.36 : x
  2. Step 2: Convert to fraction form
    18,620.36/27,929.82 = 6,308.36/x
  3. Step 3: Cross multiply
    18,620.36x = 27,929.82 × 6,308.36
  4. Step 4: Simplify right side
    18,620.36x = 176,191,359.30
  5. Step 5: Solve for x
    x = 176,191,359.30/18,620.36
  6. Step 6: Final answer
    x = 9,462.30

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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.