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Finding the Fourth Proportional to 12,136.62, 18,209.31 and 4,240.31

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Solution

The fourth proportional to 12,136.62, 18,209.31 and 4,240.31 is: 6,362.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.62 : 18,209.31 = 4,240.31 : x
  2. Step 2: Convert to fraction form
    12,136.62/18,209.31 = 4,240.31/x
  3. Step 3: Cross multiply
    12,136.62x = 18,209.31 × 4,240.31
  4. Step 4: Simplify right side
    12,136.62x = 77,213,119.29
  5. Step 5: Solve for x
    x = 77,213,119.29/12,136.62
  6. Step 6: Final answer
    x = 6,362.00

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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.