Home / 19,709.73-27,201.42-12,157.29

Finding the Fourth Proportional to 19,709.73, 27,201.42 and 12,157.29

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Solution

The fourth proportional to 19,709.73, 27,201.42 and 12,157.29 is: 16,778.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.73 : 27,201.42 = 12,157.29 : x
  2. Step 2: Convert to fraction form
    19,709.73/27,201.42 = 12,157.29/x
  3. Step 3: Cross multiply
    19,709.73x = 27,201.42 × 12,157.29
  4. Step 4: Simplify right side
    19,709.73x = 330,695,551.35
  5. Step 5: Solve for x
    x = 330,695,551.35/19,709.73
  6. Step 6: Final answer
    x = 16,778.29

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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.