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Finding the Fourth Proportional to 18,551.60, 27,827.40 and 5,405.00

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Solution

The fourth proportional to 18,551.60, 27,827.40 and 5,405.00 is: 8,107.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.60 : 27,827.40 = 5,405.00 : x
  2. Step 2: Convert to fraction form
    18,551.60/27,827.40 = 5,405.00/x
  3. Step 3: Cross multiply
    18,551.60x = 27,827.40 × 5,405.00
  4. Step 4: Simplify right side
    18,551.60x = 150,406,957.86
  5. Step 5: Solve for x
    x = 150,406,957.86/18,551.60
  6. Step 6: Final answer
    x = 8,107.49

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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.