Home / 13,992.21-20,994.17-5,678.15

Finding the Fourth Proportional to 13,992.21, 20,994.17 and 5,678.15

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Solution

The fourth proportional to 13,992.21, 20,994.17 and 5,678.15 is: 8,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.21 : 20,994.17 = 5,678.15 : x
  2. Step 2: Convert to fraction form
    13,992.21/20,994.17 = 5,678.15/x
  3. Step 3: Cross multiply
    13,992.21x = 20,994.17 × 5,678.15
  4. Step 4: Simplify right side
    13,992.21x = 119,207,913.02
  5. Step 5: Solve for x
    x = 119,207,913.02/13,992.21
  6. Step 6: Final answer
    x = 8,519.59

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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.