Home / 12,440.98-17,170.21-7,136.34

Finding the Fourth Proportional to 12,440.98, 17,170.21 and 7,136.34

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Solution

The fourth proportional to 12,440.98, 17,170.21 and 7,136.34 is: 9,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.98 : 17,170.21 = 7,136.34 : x
  2. Step 2: Convert to fraction form
    12,440.98/17,170.21 = 7,136.34/x
  3. Step 3: Cross multiply
    12,440.98x = 17,170.21 × 7,136.34
  4. Step 4: Simplify right side
    12,440.98x = 122,532,456.43
  5. Step 5: Solve for x
    x = 122,532,456.43/12,440.98
  6. Step 6: Final answer
    x = 9,849.10

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Half scale
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Double scale
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Similar ratio
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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.