Home / 19,401.20-29,053.20-12,791.60

Finding the Fourth Proportional to 19,401.20, 29,053.20 and 12,791.60

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Solution

The fourth proportional to 19,401.20, 29,053.20 and 12,791.60 is: 19,155.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,401.20 : 29,053.20 = 12,791.60 : x
  2. Step 2: Convert to fraction form
    19,401.20/29,053.20 = 12,791.60/x
  3. Step 3: Cross multiply
    19,401.20x = 29,053.20 × 12,791.60
  4. Step 4: Simplify right side
    19,401.20x = 371,636,913.12
  5. Step 5: Solve for x
    x = 371,636,913.12/19,401.20
  6. Step 6: Final answer
    x = 19,155.36

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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.