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Finding the Fourth Proportional to 18,142.86, 27,215.22 and 4,994.94

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Solution

The fourth proportional to 18,142.86, 27,215.22 and 4,994.94 is: 7,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,142.86 : 27,215.22 = 4,994.94 : x
  2. Step 2: Convert to fraction form
    18,142.86/27,215.22 = 4,994.94/x
  3. Step 3: Cross multiply
    18,142.86x = 27,215.22 × 4,994.94
  4. Step 4: Simplify right side
    18,142.86x = 135,938,390.99
  5. Step 5: Solve for x
    x = 135,938,390.99/18,142.86
  6. Step 6: Final answer
    x = 7,492.67

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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.