Home / 11,490.13-15,855.55-6,454.09

Finding the Fourth Proportional to 11,490.13, 15,855.55 and 6,454.09

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Solution

The fourth proportional to 11,490.13, 15,855.55 and 6,454.09 is: 8,906.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.13 : 15,855.55 = 6,454.09 : x
  2. Step 2: Convert to fraction form
    11,490.13/15,855.55 = 6,454.09/x
  3. Step 3: Cross multiply
    11,490.13x = 15,855.55 × 6,454.09
  4. Step 4: Simplify right side
    11,490.13x = 102,333,146.70
  5. Step 5: Solve for x
    x = 102,333,146.70/11,490.13
  6. Step 6: Final answer
    x = 8,906.18

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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.