Home / 19,111.80-28,667.70-11,316.60

Finding the Fourth Proportional to 19,111.80, 28,667.70 and 11,316.60

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Solution

The fourth proportional to 19,111.80, 28,667.70 and 11,316.60 is: 16,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.80 : 28,667.70 = 11,316.60 : x
  2. Step 2: Convert to fraction form
    19,111.80/28,667.70 = 11,316.60/x
  3. Step 3: Cross multiply
    19,111.80x = 28,667.70 × 11,316.60
  4. Step 4: Simplify right side
    19,111.80x = 324,420,893.82
  5. Step 5: Solve for x
    x = 324,420,893.82/19,111.80
  6. Step 6: Final answer
    x = 16,974.90

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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.