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Finding the Fourth Proportional to 18,123.13, 27,153.22 and 9,808.87

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Solution

The fourth proportional to 18,123.13, 27,153.22 and 9,808.87 is: 14,696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.13 : 27,153.22 = 9,808.87 : x
  2. Step 2: Convert to fraction form
    18,123.13/27,153.22 = 9,808.87/x
  3. Step 3: Cross multiply
    18,123.13x = 27,153.22 × 9,808.87
  4. Step 4: Simplify right side
    18,123.13x = 266,342,405.06
  5. Step 5: Solve for x
    x = 266,342,405.06/18,123.13
  6. Step 6: Final answer
    x = 14,696.27

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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.