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Finding the Fourth Proportional to 18,045.80, 27,068.69 and 8,803.88

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Solution

The fourth proportional to 18,045.80, 27,068.69 and 8,803.88 is: 13,205.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,045.80 : 27,068.69 = 8,803.88 : x
  2. Step 2: Convert to fraction form
    18,045.80/27,068.69 = 8,803.88/x
  3. Step 3: Cross multiply
    18,045.80x = 27,068.69 × 8,803.88
  4. Step 4: Simplify right side
    18,045.80x = 238,309,385.18
  5. Step 5: Solve for x
    x = 238,309,385.18/18,045.80
  6. Step 6: Final answer
    x = 13,205.81

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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.