Home / 20,003.49-30,006.99-10,136.43

Finding the Fourth Proportional to 20,003.49, 30,006.99 and 10,136.43

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Solution

The fourth proportional to 20,003.49, 30,006.99 and 10,136.43 is: 15,205.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.49 : 30,006.99 = 10,136.43 : x
  2. Step 2: Convert to fraction form
    20,003.49/30,006.99 = 10,136.43/x
  3. Step 3: Cross multiply
    20,003.49x = 30,006.99 × 10,136.43
  4. Step 4: Simplify right side
    20,003.49x = 304,163,753.65
  5. Step 5: Solve for x
    x = 304,163,753.65/20,003.49
  6. Step 6: Final answer
    x = 15,205.53

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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.