Home / 11,514.30-15,889.80-6,800.90

Finding the Fourth Proportional to 11,514.30, 15,889.80 and 6,800.90

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Solution

The fourth proportional to 11,514.30, 15,889.80 and 6,800.90 is: 9,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.30 : 15,889.80 = 6,800.90 : x
  2. Step 2: Convert to fraction form
    11,514.30/15,889.80 = 6,800.90/x
  3. Step 3: Cross multiply
    11,514.30x = 15,889.80 × 6,800.90
  4. Step 4: Simplify right side
    11,514.30x = 108,064,940.82
  5. Step 5: Solve for x
    x = 108,064,940.82/11,514.30
  6. Step 6: Final answer
    x = 9,385.28

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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.