Home / 19,645.56-27,103.85-13,186.78

Finding the Fourth Proportional to 19,645.56, 27,103.85 and 13,186.78

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Solution

The fourth proportional to 19,645.56, 27,103.85 and 13,186.78 is: 18,193.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.56 : 27,103.85 = 13,186.78 : x
  2. Step 2: Convert to fraction form
    19,645.56/27,103.85 = 13,186.78/x
  3. Step 3: Cross multiply
    19,645.56x = 27,103.85 × 13,186.78
  4. Step 4: Simplify right side
    19,645.56x = 357,412,490.33
  5. Step 5: Solve for x
    x = 357,412,490.33/19,645.56
  6. Step 6: Final answer
    x = 18,193.04

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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.