Home / 14,400.78-19,872.99-8,115.18

Finding the Fourth Proportional to 14,400.78, 19,872.99 and 8,115.18

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Solution

The fourth proportional to 14,400.78, 19,872.99 and 8,115.18 is: 11,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400.78 : 19,872.99 = 8,115.18 : x
  2. Step 2: Convert to fraction form
    14,400.78/19,872.99 = 8,115.18/x
  3. Step 3: Cross multiply
    14,400.78x = 19,872.99 × 8,115.18
  4. Step 4: Simplify right side
    14,400.78x = 161,272,890.99
  5. Step 5: Solve for x
    x = 161,272,890.99/14,400.78
  6. Step 6: Final answer
    x = 11,198.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.