Home / 39,136.62-58,706.79-12,485.44

Finding the Fourth Proportional to 39,136.62, 58,706.79 and 12,485.44

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Solution

The fourth proportional to 39,136.62, 58,706.79 and 12,485.44 is: 18,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,136.62 : 58,706.79 = 12,485.44 : x
  2. Step 2: Convert to fraction form
    39,136.62/58,706.79 = 12,485.44/x
  3. Step 3: Cross multiply
    39,136.62x = 58,706.79 × 12,485.44
  4. Step 4: Simplify right side
    39,136.62x = 732,980,104.14
  5. Step 5: Solve for x
    x = 732,980,104.14/39,136.62
  6. Step 6: Final answer
    x = 18,728.75

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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.