Home / 19,994.48-29,990.34-12,186.92

Finding the Fourth Proportional to 19,994.48, 29,990.34 and 12,186.92

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Solution

The fourth proportional to 19,994.48, 29,990.34 and 12,186.92 is: 18,279.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.48 : 29,990.34 = 12,186.92 : x
  2. Step 2: Convert to fraction form
    19,994.48/29,990.34 = 12,186.92/x
  3. Step 3: Cross multiply
    19,994.48x = 29,990.34 × 12,186.92
  4. Step 4: Simplify right side
    19,994.48x = 365,489,874.35
  5. Step 5: Solve for x
    x = 365,489,874.35/19,994.48
  6. Step 6: Final answer
    x = 18,279.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.