Home / 19,974.87-29,980.71-10,121.13

Finding the Fourth Proportional to 19,974.87, 29,980.71 and 10,121.13

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Solution

The fourth proportional to 19,974.87, 29,980.71 and 10,121.13 is: 15,191.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,974.87 : 29,980.71 = 10,121.13 : x
  2. Step 2: Convert to fraction form
    19,974.87/29,980.71 = 10,121.13/x
  3. Step 3: Cross multiply
    19,974.87x = 29,980.71 × 10,121.13
  4. Step 4: Simplify right side
    19,974.87x = 303,438,663.40
  5. Step 5: Solve for x
    x = 303,438,663.40/19,974.87
  6. Step 6: Final answer
    x = 15,191.02

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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.