Home / 11,615.10-16,028.48-6,309.90

Finding the Fourth Proportional to 11,615.10, 16,028.48 and 6,309.90

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Solution

The fourth proportional to 11,615.10, 16,028.48 and 6,309.90 is: 8,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,615.10 : 16,028.48 = 6,309.90 : x
  2. Step 2: Convert to fraction form
    11,615.10/16,028.48 = 6,309.90/x
  3. Step 3: Cross multiply
    11,615.10x = 16,028.48 × 6,309.90
  4. Step 4: Simplify right side
    11,615.10x = 101,138,121.73
  5. Step 5: Solve for x
    x = 101,138,121.73/11,615.10
  6. Step 6: Final answer
    x = 8,707.47

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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.