Home / 13,086.05-18,052.39-7,777.11

Finding the Fourth Proportional to 13,086.05, 18,052.39 and 7,777.11

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Solution

The fourth proportional to 13,086.05, 18,052.39 and 7,777.11 is: 10,728.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.05 : 18,052.39 = 7,777.11 : x
  2. Step 2: Convert to fraction form
    13,086.05/18,052.39 = 7,777.11/x
  3. Step 3: Cross multiply
    13,086.05x = 18,052.39 × 7,777.11
  4. Step 4: Simplify right side
    13,086.05x = 140,395,422.79
  5. Step 5: Solve for x
    x = 140,395,422.79/13,086.05
  6. Step 6: Final answer
    x = 10,728.63

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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.