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Finding the Fourth Proportional to 18,518.34, 27,779.92 and 9,753.86

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Solution

The fourth proportional to 18,518.34, 27,779.92 and 9,753.86 is: 14,632.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.34 : 27,779.92 = 9,753.86 : x
  2. Step 2: Convert to fraction form
    18,518.34/27,779.92 = 9,753.86/x
  3. Step 3: Cross multiply
    18,518.34x = 27,779.92 × 9,753.86
  4. Step 4: Simplify right side
    18,518.34x = 270,961,450.49
  5. Step 5: Solve for x
    x = 270,961,450.49/18,518.34
  6. Step 6: Final answer
    x = 14,632.06

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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.