Home / 11,238.15-15,514.28-6,990.59

Finding the Fourth Proportional to 11,238.15, 15,514.28 and 6,990.59

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Solution

The fourth proportional to 11,238.15, 15,514.28 and 6,990.59 is: 9,650.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.15 : 15,514.28 = 6,990.59 : x
  2. Step 2: Convert to fraction form
    11,238.15/15,514.28 = 6,990.59/x
  3. Step 3: Cross multiply
    11,238.15x = 15,514.28 × 6,990.59
  4. Step 4: Simplify right side
    11,238.15x = 108,453,858.10
  5. Step 5: Solve for x
    x = 108,453,858.10/11,238.15
  6. Step 6: Final answer
    x = 9,650.51

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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.