Home / 11,875.80-17,813.97-3,111.60

Finding the Fourth Proportional to 11,875.80, 17,813.97 and 3,111.60

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Solution

The fourth proportional to 11,875.80, 17,813.97 and 3,111.60 is: 4,667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,875.80 : 17,813.97 = 3,111.60 : x
  2. Step 2: Convert to fraction form
    11,875.80/17,813.97 = 3,111.60/x
  3. Step 3: Cross multiply
    11,875.80x = 17,813.97 × 3,111.60
  4. Step 4: Simplify right side
    11,875.80x = 55,429,949.05
  5. Step 5: Solve for x
    x = 55,429,949.05/11,875.80
  6. Step 6: Final answer
    x = 4,667.47

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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.