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Finding the Fourth Proportional to 18,610.64, 27,920.06 and 10,302.77

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Solution

The fourth proportional to 18,610.64, 27,920.06 and 10,302.77 is: 15,456.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.64 : 27,920.06 = 10,302.77 : x
  2. Step 2: Convert to fraction form
    18,610.64/27,920.06 = 10,302.77/x
  3. Step 3: Cross multiply
    18,610.64x = 27,920.06 × 10,302.77
  4. Step 4: Simplify right side
    18,610.64x = 287,653,905.05
  5. Step 5: Solve for x
    x = 287,653,905.05/18,610.64
  6. Step 6: Final answer
    x = 15,456.42

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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.