Home / 19,857.09-27,401.72-11,359.38

Finding the Fourth Proportional to 19,857.09, 27,401.72 and 11,359.38

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Solution

The fourth proportional to 19,857.09, 27,401.72 and 11,359.38 is: 15,675.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.09 : 27,401.72 = 11,359.38 : x
  2. Step 2: Convert to fraction form
    19,857.09/27,401.72 = 11,359.38/x
  3. Step 3: Cross multiply
    19,857.09x = 27,401.72 × 11,359.38
  4. Step 4: Simplify right side
    19,857.09x = 311,266,493.34
  5. Step 5: Solve for x
    x = 311,266,493.34/19,857.09
  6. Step 6: Final answer
    x = 15,675.33

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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.