Home / 19,705.50-27,198.15-12,992.34

Finding the Fourth Proportional to 19,705.50, 27,198.15 and 12,992.34

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Solution

The fourth proportional to 19,705.50, 27,198.15 and 12,992.34 is: 17,932.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.50 : 27,198.15 = 12,992.34 : x
  2. Step 2: Convert to fraction form
    19,705.50/27,198.15 = 12,992.34/x
  3. Step 3: Cross multiply
    19,705.50x = 27,198.15 × 12,992.34
  4. Step 4: Simplify right side
    19,705.50x = 353,367,612.17
  5. Step 5: Solve for x
    x = 353,367,612.17/19,705.50
  6. Step 6: Final answer
    x = 17,932.44

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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.