Home / 13,185.49-19,778.19-5,394.30

Finding the Fourth Proportional to 13,185.49, 19,778.19 and 5,394.30

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Solution

The fourth proportional to 13,185.49, 19,778.19 and 5,394.30 is: 8,091.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.49 : 19,778.19 = 5,394.30 : x
  2. Step 2: Convert to fraction form
    13,185.49/19,778.19 = 5,394.30/x
  3. Step 3: Cross multiply
    13,185.49x = 19,778.19 × 5,394.30
  4. Step 4: Simplify right side
    13,185.49x = 106,689,490.32
  5. Step 5: Solve for x
    x = 106,689,490.32/13,185.49
  6. Step 6: Final answer
    x = 8,091.43

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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.