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Finding the Fourth Proportional to 12,544.78, 18,880.03 and 9,440.86

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Solution

The fourth proportional to 12,544.78, 18,880.03 and 9,440.86 is: 14,208.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,544.78 : 18,880.03 = 9,440.86 : x
  2. Step 2: Convert to fraction form
    12,544.78/18,880.03 = 9,440.86/x
  3. Step 3: Cross multiply
    12,544.78x = 18,880.03 × 9,440.86
  4. Step 4: Simplify right side
    12,544.78x = 178,243,720.03
  5. Step 5: Solve for x
    x = 178,243,720.03/12,544.78
  6. Step 6: Final answer
    x = 14,208.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.