Home / 12,984.45-17,917.56-7,318.91

Finding the Fourth Proportional to 12,984.45, 17,917.56 and 7,318.91

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Solution

The fourth proportional to 12,984.45, 17,917.56 and 7,318.91 is: 10,099.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.45 : 17,917.56 = 7,318.91 : x
  2. Step 2: Convert to fraction form
    12,984.45/17,917.56 = 7,318.91/x
  3. Step 3: Cross multiply
    12,984.45x = 17,917.56 × 7,318.91
  4. Step 4: Simplify right side
    12,984.45x = 131,136,919.47
  5. Step 5: Solve for x
    x = 131,136,919.47/12,984.45
  6. Step 6: Final answer
    x = 10,099.54

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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.