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Finding the Fourth Proportional to 18,258.65, 27,388.22 and 6,411.95

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Solution

The fourth proportional to 18,258.65, 27,388.22 and 6,411.95 is: 9,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258.65 : 27,388.22 = 6,411.95 : x
  2. Step 2: Convert to fraction form
    18,258.65/27,388.22 = 6,411.95/x
  3. Step 3: Cross multiply
    18,258.65x = 27,388.22 × 6,411.95
  4. Step 4: Simplify right side
    18,258.65x = 175,611,897.23
  5. Step 5: Solve for x
    x = 175,611,897.23/18,258.65
  6. Step 6: Final answer
    x = 9,618.01

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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.