Home / 19,990.82-30,004.52-10,136.90

Finding the Fourth Proportional to 19,990.82, 30,004.52 and 10,136.90

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Solution

The fourth proportional to 19,990.82, 30,004.52 and 10,136.90 is: 15,214.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.82 : 30,004.52 = 10,136.90 : x
  2. Step 2: Convert to fraction form
    19,990.82/30,004.52 = 10,136.90/x
  3. Step 3: Cross multiply
    19,990.82x = 30,004.52 × 10,136.90
  4. Step 4: Simplify right side
    19,990.82x = 304,152,618.08
  5. Step 5: Solve for x
    x = 304,152,618.08/19,990.82
  6. Step 6: Final answer
    x = 15,214.62

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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.