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Finding the Fourth Proportional to 12,440.99, 17,169.08 and 7,136.84

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Solution

The fourth proportional to 12,440.99, 17,169.08 and 7,136.84 is: 9,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.99 : 17,169.08 = 7,136.84 : x
  2. Step 2: Convert to fraction form
    12,440.99/17,169.08 = 7,136.84/x
  3. Step 3: Cross multiply
    12,440.99x = 17,169.08 × 7,136.84
  4. Step 4: Simplify right side
    12,440.99x = 122,532,855.38
  5. Step 5: Solve for x
    x = 122,532,855.38/12,440.99
  6. Step 6: Final answer
    x = 9,849.13

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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.