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Finding the Fourth Proportional to 18,666.48, 27,990.01 and 8,803.11

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Solution

The fourth proportional to 18,666.48, 27,990.01 and 8,803.11 is: 13,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.48 : 27,990.01 = 8,803.11 : x
  2. Step 2: Convert to fraction form
    18,666.48/27,990.01 = 8,803.11/x
  3. Step 3: Cross multiply
    18,666.48x = 27,990.01 × 8,803.11
  4. Step 4: Simplify right side
    18,666.48x = 246,399,203.38
  5. Step 5: Solve for x
    x = 246,399,203.38/18,666.48
  6. Step 6: Final answer
    x = 13,200.09

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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.