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Finding the Fourth Proportional to 12,236.79, 16,890.11 and 7,202.63

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Solution

The fourth proportional to 12,236.79, 16,890.11 and 7,202.63 is: 9,941.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.79 : 16,890.11 = 7,202.63 : x
  2. Step 2: Convert to fraction form
    12,236.79/16,890.11 = 7,202.63/x
  3. Step 3: Cross multiply
    12,236.79x = 16,890.11 × 7,202.63
  4. Step 4: Simplify right side
    12,236.79x = 121,653,212.99
  5. Step 5: Solve for x
    x = 121,653,212.99/12,236.79
  6. Step 6: Final answer
    x = 9,941.60

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Half scale
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Double scale
Find fourth proportional to 12,237.79, 16,891.49 and 7,203.63
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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.