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Finding the Fourth Proportional to 18,306.30, 27,475.05 and 7,220.77

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Solution

The fourth proportional to 18,306.30, 27,475.05 and 7,220.77 is: 10,837.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.30 : 27,475.05 = 7,220.77 : x
  2. Step 2: Convert to fraction form
    18,306.30/27,475.05 = 7,220.77/x
  3. Step 3: Cross multiply
    18,306.30x = 27,475.05 × 7,220.77
  4. Step 4: Simplify right side
    18,306.30x = 198,390,950.85
  5. Step 5: Solve for x
    x = 198,390,950.85/18,306.30
  6. Step 6: Final answer
    x = 10,837.31

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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.