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Finding the Fourth Proportional to 18,431.08, 27,646.60 and 4,580.08

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Solution

The fourth proportional to 18,431.08, 27,646.60 and 4,580.08 is: 6,870.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.08 : 27,646.60 = 4,580.08 : x
  2. Step 2: Convert to fraction form
    18,431.08/27,646.60 = 4,580.08/x
  3. Step 3: Cross multiply
    18,431.08x = 27,646.60 × 4,580.08
  4. Step 4: Simplify right side
    18,431.08x = 126,623,639.73
  5. Step 5: Solve for x
    x = 126,623,639.73/18,431.08
  6. Step 6: Final answer
    x = 6,870.12

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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.