Home / 13,431.92-18,539.70-8,393.12

Finding the Fourth Proportional to 13,431.92, 18,539.70 and 8,393.12

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Solution

The fourth proportional to 13,431.92, 18,539.70 and 8,393.12 is: 11,584.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.92 : 18,539.70 = 8,393.12 : x
  2. Step 2: Convert to fraction form
    13,431.92/18,539.70 = 8,393.12/x
  3. Step 3: Cross multiply
    13,431.92x = 18,539.70 × 8,393.12
  4. Step 4: Simplify right side
    13,431.92x = 155,605,926.86
  5. Step 5: Solve for x
    x = 155,605,926.86/13,431.92
  6. Step 6: Final answer
    x = 11,584.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.