Home / 19,989.82-29,941.53-10,105.66

Finding the Fourth Proportional to 19,989.82, 29,941.53 and 10,105.66

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Solution

The fourth proportional to 19,989.82, 29,941.53 and 10,105.66 is: 15,136.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.82 : 29,941.53 = 10,105.66 : x
  2. Step 2: Convert to fraction form
    19,989.82/29,941.53 = 10,105.66/x
  3. Step 3: Cross multiply
    19,989.82x = 29,941.53 × 10,105.66
  4. Step 4: Simplify right side
    19,989.82x = 302,578,922.06
  5. Step 5: Solve for x
    x = 302,578,922.06/19,989.82
  6. Step 6: Final answer
    x = 15,136.65

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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.