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Finding the Fourth Proportional to 18,360.88, 27,537.06 and 8,991.55

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Solution

The fourth proportional to 18,360.88, 27,537.06 and 8,991.55 is: 13,485.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.88 : 27,537.06 = 8,991.55 : x
  2. Step 2: Convert to fraction form
    18,360.88/27,537.06 = 8,991.55/x
  3. Step 3: Cross multiply
    18,360.88x = 27,537.06 × 8,991.55
  4. Step 4: Simplify right side
    18,360.88x = 247,600,851.84
  5. Step 5: Solve for x
    x = 247,600,851.84/18,360.88
  6. Step 6: Final answer
    x = 13,485.24

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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.