Home / 19,990.07-30,003.39-10,136.15

Finding the Fourth Proportional to 19,990.07, 30,003.39 and 10,136.15

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Solution

The fourth proportional to 19,990.07, 30,003.39 and 10,136.15 is: 15,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.07 : 30,003.39 = 10,136.15 : x
  2. Step 2: Convert to fraction form
    19,990.07/30,003.39 = 10,136.15/x
  3. Step 3: Cross multiply
    19,990.07x = 30,003.39 × 10,136.15
  4. Step 4: Simplify right side
    19,990.07x = 304,118,711.53
  5. Step 5: Solve for x
    x = 304,118,711.53/19,990.07
  6. Step 6: Final answer
    x = 15,213.49

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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.