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Finding the Fourth Proportional to 18,644.61, 27,966.99 and 7,551.51

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Solution

The fourth proportional to 18,644.61, 27,966.99 and 7,551.51 is: 11,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.61 : 27,966.99 = 7,551.51 : x
  2. Step 2: Convert to fraction form
    18,644.61/27,966.99 = 7,551.51/x
  3. Step 3: Cross multiply
    18,644.61x = 27,966.99 × 7,551.51
  4. Step 4: Simplify right side
    18,644.61x = 211,193,004.65
  5. Step 5: Solve for x
    x = 211,193,004.65/18,644.61
  6. Step 6: Final answer
    x = 11,327.30

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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.