Home / 19,705.11-27,203.09-15,218.79

Finding the Fourth Proportional to 19,705.11, 27,203.09 and 15,218.79

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Solution

The fourth proportional to 19,705.11, 27,203.09 and 15,218.79 is: 21,009.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.11 : 27,203.09 = 15,218.79 : x
  2. Step 2: Convert to fraction form
    19,705.11/27,203.09 = 15,218.79/x
  3. Step 3: Cross multiply
    19,705.11x = 27,203.09 × 15,218.79
  4. Step 4: Simplify right side
    19,705.11x = 413,998,114.06
  5. Step 5: Solve for x
    x = 413,998,114.06/19,705.11
  6. Step 6: Final answer
    x = 21,009.68

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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.