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Finding the Fourth Proportional to 13,392.34, 18,480.55 and 8,090.08

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Solution

The fourth proportional to 13,392.34, 18,480.55 and 8,090.08 is: 11,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.34 : 18,480.55 = 8,090.08 : x
  2. Step 2: Convert to fraction form
    13,392.34/18,480.55 = 8,090.08/x
  3. Step 3: Cross multiply
    13,392.34x = 18,480.55 × 8,090.08
  4. Step 4: Simplify right side
    13,392.34x = 149,509,127.94
  5. Step 5: Solve for x
    x = 149,509,127.94/13,392.34
  6. Step 6: Final answer
    x = 11,163.78

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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.