Home / 11,489.13-15,854.18-6,453.09

Finding the Fourth Proportional to 11,489.13, 15,854.18 and 6,453.09

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Solution

The fourth proportional to 11,489.13, 15,854.18 and 6,453.09 is: 8,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.13 : 15,854.18 = 6,453.09 : x
  2. Step 2: Convert to fraction form
    11,489.13/15,854.18 = 6,453.09/x
  3. Step 3: Cross multiply
    11,489.13x = 15,854.18 × 6,453.09
  4. Step 4: Simplify right side
    11,489.13x = 102,308,418.15
  5. Step 5: Solve for x
    x = 102,308,418.15/11,489.13
  6. Step 6: Final answer
    x = 8,904.80

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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.