Home / 11,489.93-15,855.50-6,454.36

Finding the Fourth Proportional to 11,489.93, 15,855.50 and 6,454.36

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Solution

The fourth proportional to 11,489.93, 15,855.50 and 6,454.36 is: 8,906.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.93 : 15,855.50 = 6,454.36 : x
  2. Step 2: Convert to fraction form
    11,489.93/15,855.50 = 6,454.36/x
  3. Step 3: Cross multiply
    11,489.93x = 15,855.50 × 6,454.36
  4. Step 4: Simplify right side
    11,489.93x = 102,337,081.48
  5. Step 5: Solve for x
    x = 102,337,081.48/11,489.93
  6. Step 6: Final answer
    x = 8,906.68

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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.