Home / 19,578.87-29,372.82-6,430.95

Finding the Fourth Proportional to 19,578.87, 29,372.82 and 6,430.95

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Solution

The fourth proportional to 19,578.87, 29,372.82 and 6,430.95 is: 9,647.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.87 : 29,372.82 = 6,430.95 : x
  2. Step 2: Convert to fraction form
    19,578.87/29,372.82 = 6,430.95/x
  3. Step 3: Cross multiply
    19,578.87x = 29,372.82 × 6,430.95
  4. Step 4: Simplify right side
    19,578.87x = 188,895,136.78
  5. Step 5: Solve for x
    x = 188,895,136.78/19,578.87
  6. Step 6: Final answer
    x = 9,647.91

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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.