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Finding the Fourth Proportional to 18,273.80, 27,443.10 and 14,123.90

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Solution

The fourth proportional to 18,273.80, 27,443.10 and 14,123.90 is: 21,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.80 : 27,443.10 = 14,123.90 : x
  2. Step 2: Convert to fraction form
    18,273.80/27,443.10 = 14,123.90/x
  3. Step 3: Cross multiply
    18,273.80x = 27,443.10 × 14,123.90
  4. Step 4: Simplify right side
    18,273.80x = 387,603,600.09
  5. Step 5: Solve for x
    x = 387,603,600.09/18,273.80
  6. Step 6: Final answer
    x = 21,210.89

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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.