Home / 12,620.18-18,909.34-7,674.86

Finding the Fourth Proportional to 12,620.18, 18,909.34 and 7,674.86

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Solution

The fourth proportional to 12,620.18, 18,909.34 and 7,674.86 is: 11,499.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.18 : 18,909.34 = 7,674.86 : x
  2. Step 2: Convert to fraction form
    12,620.18/18,909.34 = 7,674.86/x
  3. Step 3: Cross multiply
    12,620.18x = 18,909.34 × 7,674.86
  4. Step 4: Simplify right side
    12,620.18x = 145,126,537.19
  5. Step 5: Solve for x
    x = 145,126,537.19/12,620.18
  6. Step 6: Final answer
    x = 11,499.56

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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.