Home / 13,143.24-18,136.44-7,836.12

Finding the Fourth Proportional to 13,143.24, 18,136.44 and 7,836.12

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Solution

The fourth proportional to 13,143.24, 18,136.44 and 7,836.12 is: 10,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.24 : 18,136.44 = 7,836.12 : x
  2. Step 2: Convert to fraction form
    13,143.24/18,136.44 = 7,836.12/x
  3. Step 3: Cross multiply
    13,143.24x = 18,136.44 × 7,836.12
  4. Step 4: Simplify right side
    13,143.24x = 142,119,320.21
  5. Step 5: Solve for x
    x = 142,119,320.21/13,143.24
  6. Step 6: Final answer
    x = 10,813.11

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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.