Home / 13,193.64-18,208.80-8,161.20

Finding the Fourth Proportional to 13,193.64, 18,208.80 and 8,161.20

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Solution

The fourth proportional to 13,193.64, 18,208.80 and 8,161.20 is: 11,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,193.64 : 18,208.80 = 8,161.20 : x
  2. Step 2: Convert to fraction form
    13,193.64/18,208.80 = 8,161.20/x
  3. Step 3: Cross multiply
    13,193.64x = 18,208.80 × 8,161.20
  4. Step 4: Simplify right side
    13,193.64x = 148,605,658.56
  5. Step 5: Solve for x
    x = 148,605,658.56/13,193.64
  6. Step 6: Final answer
    x = 11,263.43

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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.