Home / 19,659.12-27,129.42-13,694.10

Finding the Fourth Proportional to 19,659.12, 27,129.42 and 13,694.10

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Solution

The fourth proportional to 19,659.12, 27,129.42 and 13,694.10 is: 18,897.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.12 : 27,129.42 = 13,694.10 : x
  2. Step 2: Convert to fraction form
    19,659.12/27,129.42 = 13,694.10/x
  3. Step 3: Cross multiply
    19,659.12x = 27,129.42 × 13,694.10
  4. Step 4: Simplify right side
    19,659.12x = 371,512,990.42
  5. Step 5: Solve for x
    x = 371,512,990.42/19,659.12
  6. Step 6: Final answer
    x = 18,897.74

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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.