Home / 11,514.80-15,886.44-6,478.22

Finding the Fourth Proportional to 11,514.80, 15,886.44 and 6,478.22

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Solution

The fourth proportional to 11,514.80, 15,886.44 and 6,478.22 is: 8,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.80 : 15,886.44 = 6,478.22 : x
  2. Step 2: Convert to fraction form
    11,514.80/15,886.44 = 6,478.22/x
  3. Step 3: Cross multiply
    11,514.80x = 15,886.44 × 6,478.22
  4. Step 4: Simplify right side
    11,514.80x = 102,915,773.90
  5. Step 5: Solve for x
    x = 102,915,773.90/11,514.80
  6. Step 6: Final answer
    x = 8,937.70

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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.