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Finding the Fourth Proportional to 12,585.54, 18,880.74 and 6,748.68

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Solution

The fourth proportional to 12,585.54, 18,880.74 and 6,748.68 is: 10,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.54 : 18,880.74 = 6,748.68 : x
  2. Step 2: Convert to fraction form
    12,585.54/18,880.74 = 6,748.68/x
  3. Step 3: Cross multiply
    12,585.54x = 18,880.74 × 6,748.68
  4. Step 4: Simplify right side
    12,585.54x = 127,420,072.42
  5. Step 5: Solve for x
    x = 127,420,072.42/12,585.54
  6. Step 6: Final answer
    x = 10,124.32

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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.