Home / 11,514.12-15,889.14-6,478.62

Finding the Fourth Proportional to 11,514.12, 15,889.14 and 6,478.62

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Solution

The fourth proportional to 11,514.12, 15,889.14 and 6,478.62 is: 8,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.12 : 15,889.14 = 6,478.62 : x
  2. Step 2: Convert to fraction form
    11,514.12/15,889.14 = 6,478.62/x
  3. Step 3: Cross multiply
    11,514.12x = 15,889.14 × 6,478.62
  4. Step 4: Simplify right side
    11,514.12x = 102,939,700.19
  5. Step 5: Solve for x
    x = 102,939,700.19/11,514.12
  6. Step 6: Final answer
    x = 8,940.30

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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.