Home / 12,359.72-18,539.42-2,999.81

Finding the Fourth Proportional to 12,359.72, 18,539.42 and 2,999.81

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Solution

The fourth proportional to 12,359.72, 18,539.42 and 2,999.81 is: 4,499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.72 : 18,539.42 = 2,999.81 : x
  2. Step 2: Convert to fraction form
    12,359.72/18,539.42 = 2,999.81/x
  3. Step 3: Cross multiply
    12,359.72x = 18,539.42 × 2,999.81
  4. Step 4: Simplify right side
    12,359.72x = 55,614,768.86
  5. Step 5: Solve for x
    x = 55,614,768.86/12,359.72
  6. Step 6: Final answer
    x = 4,499.68

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Similar ratio
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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.