Home / 13,136.36-18,122.46-8,654.36

Finding the Fourth Proportional to 13,136.36, 18,122.46 and 8,654.36

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Solution

The fourth proportional to 13,136.36, 18,122.46 and 8,654.36 is: 11,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.36 : 18,122.46 = 8,654.36 : x
  2. Step 2: Convert to fraction form
    13,136.36/18,122.46 = 8,654.36/x
  3. Step 3: Cross multiply
    13,136.36x = 18,122.46 × 8,654.36
  4. Step 4: Simplify right side
    13,136.36x = 156,838,292.93
  5. Step 5: Solve for x
    x = 156,838,292.93/13,136.36
  6. Step 6: Final answer
    x = 11,939.25

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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.