Home / 14,144.25-19,519.07-7,857.21

Finding the Fourth Proportional to 14,144.25, 19,519.07 and 7,857.21

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Solution

The fourth proportional to 14,144.25, 19,519.07 and 7,857.21 is: 10,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.25 : 19,519.07 = 7,857.21 : x
  2. Step 2: Convert to fraction form
    14,144.25/19,519.07 = 7,857.21/x
  3. Step 3: Cross multiply
    14,144.25x = 19,519.07 × 7,857.21
  4. Step 4: Simplify right side
    14,144.25x = 153,365,431.99
  5. Step 5: Solve for x
    x = 153,365,431.99/14,144.25
  6. Step 6: Final answer
    x = 10,842.95

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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.