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Finding the Fourth Proportional to 18,560.12, 27,840.18 and 8,706.32

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Solution

The fourth proportional to 18,560.12, 27,840.18 and 8,706.32 is: 13,059.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,560.12 : 27,840.18 = 8,706.32 : x
  2. Step 2: Convert to fraction form
    18,560.12/27,840.18 = 8,706.32/x
  3. Step 3: Cross multiply
    18,560.12x = 27,840.18 × 8,706.32
  4. Step 4: Simplify right side
    18,560.12x = 242,385,515.94
  5. Step 5: Solve for x
    x = 242,385,515.94/18,560.12
  6. Step 6: Final answer
    x = 13,059.48

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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.