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Finding the Fourth Proportional to 12,214.41, 16,855.89 and 6,909.11

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Solution

The fourth proportional to 12,214.41, 16,855.89 and 6,909.11 is: 9,534.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.41 : 16,855.89 = 6,909.11 : x
  2. Step 2: Convert to fraction form
    12,214.41/16,855.89 = 6,909.11/x
  3. Step 3: Cross multiply
    12,214.41x = 16,855.89 × 6,909.11
  4. Step 4: Simplify right side
    12,214.41x = 116,459,151.18
  5. Step 5: Solve for x
    x = 116,459,151.18/12,214.41
  6. Step 6: Final answer
    x = 9,534.57

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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.