Home / 19,578.20-29,372.70-9,717.80

Finding the Fourth Proportional to 19,578.20, 29,372.70 and 9,717.80

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Solution

The fourth proportional to 19,578.20, 29,372.70 and 9,717.80 is: 14,579.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.20 : 29,372.70 = 9,717.80 : x
  2. Step 2: Convert to fraction form
    19,578.20/29,372.70 = 9,717.80/x
  3. Step 3: Cross multiply
    19,578.20x = 29,372.70 × 9,717.80
  4. Step 4: Simplify right side
    19,578.20x = 285,438,024.06
  5. Step 5: Solve for x
    x = 285,438,024.06/19,578.20
  6. Step 6: Final answer
    x = 14,579.38

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1.5x scale

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.