Home / 12,099.91-18,136-6,540.79

Finding the Fourth Proportional to 12,099.91, 18,136 and 6,540.79

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Solution

The fourth proportional to 12,099.91, 18,136 and 6,540.79 is: 9,803.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,099.91 : 18,136 = 6,540.79 : x
  2. Step 2: Convert to fraction form
    12,099.91/18,136 = 6,540.79/x
  3. Step 3: Cross multiply
    12,099.91x = 18,136 × 6,540.79
  4. Step 4: Simplify right side
    12,099.91x = 118,623,767.44
  5. Step 5: Solve for x
    x = 118,623,767.44/12,099.91
  6. Step 6: Final answer
    x = 9,803.69

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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.