Home / 18,136.23-27,212.72-8,278.53

Finding the Fourth Proportional to 18,136.23, 27,212.72 and 8,278.53

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Solution

The fourth proportional to 18,136.23, 27,212.72 and 8,278.53 is: 12,421.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.23 : 27,212.72 = 8,278.53 : x
  2. Step 2: Convert to fraction form
    18,136.23/27,212.72 = 8,278.53/x
  3. Step 3: Cross multiply
    18,136.23x = 27,212.72 × 8,278.53
  4. Step 4: Simplify right side
    18,136.23x = 225,281,318.90
  5. Step 5: Solve for x
    x = 225,281,318.90/18,136.23
  6. Step 6: Final answer
    x = 12,421.62

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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.