Home / 19,689.79-27,181.59-13,644.61

Finding the Fourth Proportional to 19,689.79, 27,181.59 and 13,644.61

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Solution

The fourth proportional to 19,689.79, 27,181.59 and 13,644.61 is: 18,836.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.79 : 27,181.59 = 13,644.61 : x
  2. Step 2: Convert to fraction form
    19,689.79/27,181.59 = 13,644.61/x
  3. Step 3: Cross multiply
    19,689.79x = 27,181.59 × 13,644.61
  4. Step 4: Simplify right side
    19,689.79x = 370,882,194.73
  5. Step 5: Solve for x
    x = 370,882,194.73/19,689.79
  6. Step 6: Final answer
    x = 18,836.27

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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.