Home / 20,994.89-31,492.13-8,511.94

Finding the Fourth Proportional to 20,994.89, 31,492.13 and 8,511.94

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Solution

The fourth proportional to 20,994.89, 31,492.13 and 8,511.94 is: 12,767.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.89 : 31,492.13 = 8,511.94 : x
  2. Step 2: Convert to fraction form
    20,994.89/31,492.13 = 8,511.94/x
  3. Step 3: Cross multiply
    20,994.89x = 31,492.13 × 8,511.94
  4. Step 4: Simplify right side
    20,994.89x = 268,059,274.75
  5. Step 5: Solve for x
    x = 268,059,274.75/20,994.89
  6. Step 6: Final answer
    x = 12,767.84

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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.