Home / 11,508.30-15,881.67-6,728.66

Finding the Fourth Proportional to 11,508.30, 15,881.67 and 6,728.66

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Solution

The fourth proportional to 11,508.30, 15,881.67 and 6,728.66 is: 9,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.30 : 15,881.67 = 6,728.66 : x
  2. Step 2: Convert to fraction form
    11,508.30/15,881.67 = 6,728.66/x
  3. Step 3: Cross multiply
    11,508.30x = 15,881.67 × 6,728.66
  4. Step 4: Simplify right side
    11,508.30x = 106,862,357.66
  5. Step 5: Solve for x
    x = 106,862,357.66/11,508.30
  6. Step 6: Final answer
    x = 9,285.68

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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.