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Finding the Fourth Proportional to 18,492.21, 27,738.19 and 7,401.46

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Solution

The fourth proportional to 18,492.21, 27,738.19 and 7,401.46 is: 11,102.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.21 : 27,738.19 = 7,401.46 : x
  2. Step 2: Convert to fraction form
    18,492.21/27,738.19 = 7,401.46/x
  3. Step 3: Cross multiply
    18,492.21x = 27,738.19 × 7,401.46
  4. Step 4: Simplify right side
    18,492.21x = 205,303,103.76
  5. Step 5: Solve for x
    x = 205,303,103.76/18,492.21
  6. Step 6: Final answer
    x = 11,102.14

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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.