Home / 13,142.26-18,136.36-8,426.56

Finding the Fourth Proportional to 13,142.26, 18,136.36 and 8,426.56

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Solution

The fourth proportional to 13,142.26, 18,136.36 and 8,426.56 is: 11,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.26 : 18,136.36 = 8,426.56 : x
  2. Step 2: Convert to fraction form
    13,142.26/18,136.36 = 8,426.56/x
  3. Step 3: Cross multiply
    13,142.26x = 18,136.36 × 8,426.56
  4. Step 4: Simplify right side
    13,142.26x = 152,827,125.72
  5. Step 5: Solve for x
    x = 152,827,125.72/13,142.26
  6. Step 6: Final answer
    x = 11,628.68

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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.