Home / 13,850.82-19,111.60-7,800.12

Finding the Fourth Proportional to 13,850.82, 19,111.60 and 7,800.12

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Solution

The fourth proportional to 13,850.82, 19,111.60 and 7,800.12 is: 10,762.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.82 : 19,111.60 = 7,800.12 : x
  2. Step 2: Convert to fraction form
    13,850.82/19,111.60 = 7,800.12/x
  3. Step 3: Cross multiply
    13,850.82x = 19,111.60 × 7,800.12
  4. Step 4: Simplify right side
    13,850.82x = 149,072,734.39
  5. Step 5: Solve for x
    x = 149,072,734.39/13,850.82
  6. Step 6: Final answer
    x = 10,762.74

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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.