Home / 11,531.55-17,315.55-7,850.10

Finding the Fourth Proportional to 11,531.55, 17,315.55 and 7,850.10

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Solution

The fourth proportional to 11,531.55, 17,315.55 and 7,850.10 is: 11,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,531.55 : 17,315.55 = 7,850.10 : x
  2. Step 2: Convert to fraction form
    11,531.55/17,315.55 = 7,850.10/x
  3. Step 3: Cross multiply
    11,531.55x = 17,315.55 × 7,850.10
  4. Step 4: Simplify right side
    11,531.55x = 135,928,799.06
  5. Step 5: Solve for x
    x = 135,928,799.06/11,531.55
  6. Step 6: Final answer
    x = 11,787.56

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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.