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Finding the Fourth Proportional to 13,617.95, 18,801.48 and 9,087.11

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Solution

The fourth proportional to 13,617.95, 18,801.48 and 9,087.11 is: 12,546.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.95 : 18,801.48 = 9,087.11 : x
  2. Step 2: Convert to fraction form
    13,617.95/18,801.48 = 9,087.11/x
  3. Step 3: Cross multiply
    13,617.95x = 18,801.48 × 9,087.11
  4. Step 4: Simplify right side
    13,617.95x = 170,851,116.92
  5. Step 5: Solve for x
    x = 170,851,116.92/13,617.95
  6. Step 6: Final answer
    x = 12,546.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.