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Finding the Fourth Proportional to 12,880.23, 17,771.99 and 7,573.11

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Solution

The fourth proportional to 12,880.23, 17,771.99 and 7,573.11 is: 10,449.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.23 : 17,771.99 = 7,573.11 : x
  2. Step 2: Convert to fraction form
    12,880.23/17,771.99 = 7,573.11/x
  3. Step 3: Cross multiply
    12,880.23x = 17,771.99 × 7,573.11
  4. Step 4: Simplify right side
    12,880.23x = 134,589,197.32
  5. Step 5: Solve for x
    x = 134,589,197.32/12,880.23
  6. Step 6: Final answer
    x = 10,449.29

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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.