Home / 12,136.98-18,205.29-4,239.48

Finding the Fourth Proportional to 12,136.98, 18,205.29 and 4,239.48

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Solution

The fourth proportional to 12,136.98, 18,205.29 and 4,239.48 is: 6,359.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.98 : 18,205.29 = 4,239.48 : x
  2. Step 2: Convert to fraction form
    12,136.98/18,205.29 = 4,239.48/x
  3. Step 3: Cross multiply
    12,136.98x = 18,205.29 × 4,239.48
  4. Step 4: Simplify right side
    12,136.98x = 77,180,962.85
  5. Step 5: Solve for x
    x = 77,180,962.85/12,136.98
  6. Step 6: Final answer
    x = 6,359.16

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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.