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Finding the Fourth Proportional to 12,240.53, 16,891.65 and 7,136.99

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Solution

The fourth proportional to 12,240.53, 16,891.65 and 7,136.99 is: 9,848.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.53 : 16,891.65 = 7,136.99 : x
  2. Step 2: Convert to fraction form
    12,240.53/16,891.65 = 7,136.99/x
  3. Step 3: Cross multiply
    12,240.53x = 16,891.65 × 7,136.99
  4. Step 4: Simplify right side
    12,240.53x = 120,555,452.68
  5. Step 5: Solve for x
    x = 120,555,452.68/12,240.53
  6. Step 6: Final answer
    x = 9,848.88

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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.