Home / 12,428.82-18,685.14-6,892.05

Finding the Fourth Proportional to 12,428.82, 18,685.14 and 6,892.05

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Solution

The fourth proportional to 12,428.82, 18,685.14 and 6,892.05 is: 10,361.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.82 : 18,685.14 = 6,892.05 : x
  2. Step 2: Convert to fraction form
    12,428.82/18,685.14 = 6,892.05/x
  3. Step 3: Cross multiply
    12,428.82x = 18,685.14 × 6,892.05
  4. Step 4: Simplify right side
    12,428.82x = 128,778,919.14
  5. Step 5: Solve for x
    x = 128,778,919.14/12,428.82
  6. Step 6: Final answer
    x = 10,361.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.