Home / 11,491.43-15,857.74-6,387.26

Finding the Fourth Proportional to 11,491.43, 15,857.74 and 6,387.26

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Solution

The fourth proportional to 11,491.43, 15,857.74 and 6,387.26 is: 8,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.43 : 15,857.74 = 6,387.26 : x
  2. Step 2: Convert to fraction form
    11,491.43/15,857.74 = 6,387.26/x
  3. Step 3: Cross multiply
    11,491.43x = 15,857.74 × 6,387.26
  4. Step 4: Simplify right side
    11,491.43x = 101,287,508.39
  5. Step 5: Solve for x
    x = 101,287,508.39/11,491.43
  6. Step 6: Final answer
    x = 8,814.18

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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.