Home / 19,654.25-27,135.41-15,108.12

Finding the Fourth Proportional to 19,654.25, 27,135.41 and 15,108.12

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Solution

The fourth proportional to 19,654.25, 27,135.41 and 15,108.12 is: 20,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,654.25 : 27,135.41 = 15,108.12 : x
  2. Step 2: Convert to fraction form
    19,654.25/27,135.41 = 15,108.12/x
  3. Step 3: Cross multiply
    19,654.25x = 27,135.41 × 15,108.12
  4. Step 4: Simplify right side
    19,654.25x = 409,964,954.99
  5. Step 5: Solve for x
    x = 409,964,954.99/19,654.25
  6. Step 6: Final answer
    x = 20,858.85

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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.