Home / 18,490.32-27,730.50-8,619.96

Finding the Fourth Proportional to 18,490.32, 27,730.50 and 8,619.96

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Solution

The fourth proportional to 18,490.32, 27,730.50 and 8,619.96 is: 12,927.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.32 : 27,730.50 = 8,619.96 : x
  2. Step 2: Convert to fraction form
    18,490.32/27,730.50 = 8,619.96/x
  3. Step 3: Cross multiply
    18,490.32x = 27,730.50 × 8,619.96
  4. Step 4: Simplify right side
    18,490.32x = 239,035,800.78
  5. Step 5: Solve for x
    x = 239,035,800.78/18,490.32
  6. Step 6: Final answer
    x = 12,927.62

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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.