Home / 19,942.86-29,915.73-5,151.90

Finding the Fourth Proportional to 19,942.86, 29,915.73 and 5,151.90

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Solution

The fourth proportional to 19,942.86, 29,915.73 and 5,151.90 is: 7,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.86 : 29,915.73 = 5,151.90 : x
  2. Step 2: Convert to fraction form
    19,942.86/29,915.73 = 5,151.90/x
  3. Step 3: Cross multiply
    19,942.86x = 29,915.73 × 5,151.90
  4. Step 4: Simplify right side
    19,942.86x = 154,122,849.39
  5. Step 5: Solve for x
    x = 154,122,849.39/19,942.86
  6. Step 6: Final answer
    x = 7,728.22

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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.