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Finding the Fourth Proportional to 18,384.84, 25,396.92 and 16,394.76

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Solution

The fourth proportional to 18,384.84, 25,396.92 and 16,394.76 is: 22,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.84 : 25,396.92 = 16,394.76 : x
  2. Step 2: Convert to fraction form
    18,384.84/25,396.92 = 16,394.76/x
  3. Step 3: Cross multiply
    18,384.84x = 25,396.92 × 16,394.76
  4. Step 4: Simplify right side
    18,384.84x = 416,376,408.14
  5. Step 5: Solve for x
    x = 416,376,408.14/18,384.84
  6. Step 6: Final answer
    x = 22,647.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.