Home / 28,136.24-42,144.81-18,246.14

Finding the Fourth Proportional to 28,136.24, 42,144.81 and 18,246.14

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Solution

The fourth proportional to 28,136.24, 42,144.81 and 18,246.14 is: 27,330.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.24 : 42,144.81 = 18,246.14 : x
  2. Step 2: Convert to fraction form
    28,136.24/42,144.81 = 18,246.14/x
  3. Step 3: Cross multiply
    28,136.24x = 42,144.81 × 18,246.14
  4. Step 4: Simplify right side
    28,136.24x = 768,980,103.53
  5. Step 5: Solve for x
    x = 768,980,103.53/28,136.24
  6. Step 6: Final answer
    x = 27,330.59

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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.