Home / 19,879.88-27,434.45-10,805.25

Finding the Fourth Proportional to 19,879.88, 27,434.45 and 10,805.25

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Solution

The fourth proportional to 19,879.88, 27,434.45 and 10,805.25 is: 14,911.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.88 : 27,434.45 = 10,805.25 : x
  2. Step 2: Convert to fraction form
    19,879.88/27,434.45 = 10,805.25/x
  3. Step 3: Cross multiply
    19,879.88x = 27,434.45 × 10,805.25
  4. Step 4: Simplify right side
    19,879.88x = 296,436,090.86
  5. Step 5: Solve for x
    x = 296,436,090.86/19,879.88
  6. Step 6: Final answer
    x = 14,911.36

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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.