Home / 11,136.60-15,361.10-7,162.74

Finding the Fourth Proportional to 11,136.60, 15,361.10 and 7,162.74

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Solution

The fourth proportional to 11,136.60, 15,361.10 and 7,162.74 is: 9,879.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,136.60 : 15,361.10 = 7,162.74 : x
  2. Step 2: Convert to fraction form
    11,136.60/15,361.10 = 7,162.74/x
  3. Step 3: Cross multiply
    11,136.60x = 15,361.10 × 7,162.74
  4. Step 4: Simplify right side
    11,136.60x = 110,027,565.41
  5. Step 5: Solve for x
    x = 110,027,565.41/11,136.60
  6. Step 6: Final answer
    x = 9,879.82

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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.