Home / 12,136.12-18,208.56-4,239.81

Finding the Fourth Proportional to 12,136.12, 18,208.56 and 4,239.81

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Solution

The fourth proportional to 12,136.12, 18,208.56 and 4,239.81 is: 6,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.12 : 18,208.56 = 4,239.81 : x
  2. Step 2: Convert to fraction form
    12,136.12/18,208.56 = 4,239.81/x
  3. Step 3: Cross multiply
    12,136.12x = 18,208.56 × 4,239.81
  4. Step 4: Simplify right side
    12,136.12x = 77,200,834.77
  5. Step 5: Solve for x
    x = 77,200,834.77/12,136.12
  6. Step 6: Final answer
    x = 6,361.25

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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.