Home / 18,381,906.40-25,350,517.20-11,507,015.20

Finding the Fourth Proportional to 18,381,906.40, 25,350,517.20 and 11,507,015.20

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Solution

The fourth proportional to 18,381,906.40, 25,350,517.20 and 11,507,015.20 is: 15,869,343.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381,906.40 : 25,350,517.20 = 11,507,015.20 : x
  2. Step 2: Convert to fraction form
    18,381,906.40/25,350,517.20 = 11,507,015.20/x
  3. Step 3: Cross multiply
    18,381,906.40x = 25,350,517.20 × 11,507,015.20
  4. Step 4: Simplify right side
    18,381,906.40x = 291,708,786,748,261.44
  5. Step 5: Solve for x
    x = 291,708,786,748,261.44/18,381,906.40
  6. Step 6: Final answer
    x = 15,869,343.49

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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.