Home / 12,215.25-16,857.42-6,909.96

Finding the Fourth Proportional to 12,215.25, 16,857.42 and 6,909.96

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Solution

The fourth proportional to 12,215.25, 16,857.42 and 6,909.96 is: 9,535.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.25 : 16,857.42 = 6,909.96 : x
  2. Step 2: Convert to fraction form
    12,215.25/16,857.42 = 6,909.96/x
  3. Step 3: Cross multiply
    12,215.25x = 16,857.42 × 6,909.96
  4. Step 4: Simplify right side
    12,215.25x = 116,484,097.90
  5. Step 5: Solve for x
    x = 116,484,097.90/12,215.25
  6. Step 6: Final answer
    x = 9,535.96

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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.