Home / 11,491.18-15,857.76-6,455.41

Finding the Fourth Proportional to 11,491.18, 15,857.76 and 6,455.41

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Solution

The fourth proportional to 11,491.18, 15,857.76 and 6,455.41 is: 8,908.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.18 : 15,857.76 = 6,455.41 : x
  2. Step 2: Convert to fraction form
    11,491.18/15,857.76 = 6,455.41/x
  3. Step 3: Cross multiply
    11,491.18x = 15,857.76 × 6,455.41
  4. Step 4: Simplify right side
    11,491.18x = 102,368,342.48
  5. Step 5: Solve for x
    x = 102,368,342.48/11,491.18
  6. Step 6: Final answer
    x = 8,908.43

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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.