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Finding the Fourth Proportional to 12,369.84, 18,555.60 and 4,974.30

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Solution

The fourth proportional to 12,369.84, 18,555.60 and 4,974.30 is: 7,461.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.84 : 18,555.60 = 4,974.30 : x
  2. Step 2: Convert to fraction form
    12,369.84/18,555.60 = 4,974.30/x
  3. Step 3: Cross multiply
    12,369.84x = 18,555.60 × 4,974.30
  4. Step 4: Simplify right side
    12,369.84x = 92,301,121.08
  5. Step 5: Solve for x
    x = 92,301,121.08/12,369.84
  6. Step 6: Final answer
    x = 7,461.79

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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.