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Finding the Fourth Proportional to 18,187.56, 27,281.70 and 5,708.00

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Solution

The fourth proportional to 18,187.56, 27,281.70 and 5,708.00 is: 8,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.56 : 27,281.70 = 5,708.00 : x
  2. Step 2: Convert to fraction form
    18,187.56/27,281.70 = 5,708.00/x
  3. Step 3: Cross multiply
    18,187.56x = 27,281.70 × 5,708.00
  4. Step 4: Simplify right side
    18,187.56x = 155,723,807.19
  5. Step 5: Solve for x
    x = 155,723,807.19/18,187.56
  6. Step 6: Final answer
    x = 8,562.10

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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.