Home / 13,712.69-20,569.81-3,851.21

Finding the Fourth Proportional to 13,712.69, 20,569.81 and 3,851.21

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Solution

The fourth proportional to 13,712.69, 20,569.81 and 3,851.21 is: 5,777.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.69 : 20,569.81 = 3,851.21 : x
  2. Step 2: Convert to fraction form
    13,712.69/20,569.81 = 3,851.21/x
  3. Step 3: Cross multiply
    13,712.69x = 20,569.81 × 3,851.21
  4. Step 4: Simplify right side
    13,712.69x = 79,218,545.49
  5. Step 5: Solve for x
    x = 79,218,545.49/13,712.69
  6. Step 6: Final answer
    x = 5,777.02

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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.