Home / 12,429.70-18,644.55-7,496.80

Finding the Fourth Proportional to 12,429.70, 18,644.55 and 7,496.80

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Solution

The fourth proportional to 12,429.70, 18,644.55 and 7,496.80 is: 11,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.70 : 18,644.55 = 7,496.80 : x
  2. Step 2: Convert to fraction form
    12,429.70/18,644.55 = 7,496.80/x
  3. Step 3: Cross multiply
    12,429.70x = 18,644.55 × 7,496.80
  4. Step 4: Simplify right side
    12,429.70x = 139,774,462.44
  5. Step 5: Solve for x
    x = 139,774,462.44/12,429.70
  6. Step 6: Final answer
    x = 11,245.20

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.