Home / 19,990.24-29,974.71-11,672.81

Finding the Fourth Proportional to 19,990.24, 29,974.71 and 11,672.81

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Solution

The fourth proportional to 19,990.24, 29,974.71 and 11,672.81 is: 17,502.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.24 : 29,974.71 = 11,672.81 : x
  2. Step 2: Convert to fraction form
    19,990.24/29,974.71 = 11,672.81/x
  3. Step 3: Cross multiply
    19,990.24x = 29,974.71 × 11,672.81
  4. Step 4: Simplify right side
    19,990.24x = 349,889,035.28
  5. Step 5: Solve for x
    x = 349,889,035.28/19,990.24
  6. Step 6: Final answer
    x = 17,502.99

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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.