Home / 11,491.32-15,857.82-6,455.58

Finding the Fourth Proportional to 11,491.32, 15,857.82 and 6,455.58

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Solution

The fourth proportional to 11,491.32, 15,857.82 and 6,455.58 is: 8,908.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.32 : 15,857.82 = 6,455.58 : x
  2. Step 2: Convert to fraction form
    11,491.32/15,857.82 = 6,455.58/x
  3. Step 3: Cross multiply
    11,491.32x = 15,857.82 × 6,455.58
  4. Step 4: Simplify right side
    11,491.32x = 102,371,425.64
  5. Step 5: Solve for x
    x = 102,371,425.64/11,491.32
  6. Step 6: Final answer
    x = 8,908.59

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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.