Home / 20,291.88-27,985.59-17,120.73

Finding the Fourth Proportional to 20,291.88, 27,985.59 and 17,120.73

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Solution

The fourth proportional to 20,291.88, 27,985.59 and 17,120.73 is: 23,612.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.88 : 27,985.59 = 17,120.73 : x
  2. Step 2: Convert to fraction form
    20,291.88/27,985.59 = 17,120.73/x
  3. Step 3: Cross multiply
    20,291.88x = 27,985.59 × 17,120.73
  4. Step 4: Simplify right side
    20,291.88x = 479,133,730.28
  5. Step 5: Solve for x
    x = 479,133,730.28/20,291.88
  6. Step 6: Final answer
    x = 23,612.09

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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.