Home / 11,487.87-17,219.81-7,790.33

Finding the Fourth Proportional to 11,487.87, 17,219.81 and 7,790.33

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Solution

The fourth proportional to 11,487.87, 17,219.81 and 7,790.33 is: 11,677.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.87 : 17,219.81 = 7,790.33 : x
  2. Step 2: Convert to fraction form
    11,487.87/17,219.81 = 7,790.33/x
  3. Step 3: Cross multiply
    11,487.87x = 17,219.81 × 7,790.33
  4. Step 4: Simplify right side
    11,487.87x = 134,147,877.39
  5. Step 5: Solve for x
    x = 134,147,877.39/11,487.87
  6. Step 6: Final answer
    x = 11,677.35

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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.