Home / 20,058.35-27,681.39-11,105.86

Finding the Fourth Proportional to 20,058.35, 27,681.39 and 11,105.86

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Solution

The fourth proportional to 20,058.35, 27,681.39 and 11,105.86 is: 15,326.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,058.35 : 27,681.39 = 11,105.86 : x
  2. Step 2: Convert to fraction form
    20,058.35/27,681.39 = 11,105.86/x
  3. Step 3: Cross multiply
    20,058.35x = 27,681.39 × 11,105.86
  4. Step 4: Simplify right side
    20,058.35x = 307,425,572.85
  5. Step 5: Solve for x
    x = 307,425,572.85/20,058.35
  6. Step 6: Final answer
    x = 15,326.56

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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.