Home / 11,917.76-16,435.14-7,136.93

Finding the Fourth Proportional to 11,917.76, 16,435.14 and 7,136.93

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Solution

The fourth proportional to 11,917.76, 16,435.14 and 7,136.93 is: 9,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.76 : 16,435.14 = 7,136.93 : x
  2. Step 2: Convert to fraction form
    11,917.76/16,435.14 = 7,136.93/x
  3. Step 3: Cross multiply
    11,917.76x = 16,435.14 × 7,136.93
  4. Step 4: Simplify right side
    11,917.76x = 117,296,361.54
  5. Step 5: Solve for x
    x = 117,296,361.54/11,917.76
  6. Step 6: Final answer
    x = 9,842.15

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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.