Home / 13,102.60-18,080.40-7,796.56

Finding the Fourth Proportional to 13,102.60, 18,080.40 and 7,796.56

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Solution

The fourth proportional to 13,102.60, 18,080.40 and 7,796.56 is: 10,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.60 : 18,080.40 = 7,796.56 : x
  2. Step 2: Convert to fraction form
    13,102.60/18,080.40 = 7,796.56/x
  3. Step 3: Cross multiply
    13,102.60x = 18,080.40 × 7,796.56
  4. Step 4: Simplify right side
    13,102.60x = 140,964,923.42
  5. Step 5: Solve for x
    x = 140,964,923.42/13,102.60
  6. Step 6: Final answer
    x = 10,758.55

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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.