Home / 12,795.80-19,193.70-5,405.60

Finding the Fourth Proportional to 12,795.80, 19,193.70 and 5,405.60

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Solution

The fourth proportional to 12,795.80, 19,193.70 and 5,405.60 is: 8,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.80 : 19,193.70 = 5,405.60 : x
  2. Step 2: Convert to fraction form
    12,795.80/19,193.70 = 5,405.60/x
  3. Step 3: Cross multiply
    12,795.80x = 19,193.70 × 5,405.60
  4. Step 4: Simplify right side
    12,795.80x = 103,753,464.72
  5. Step 5: Solve for x
    x = 103,753,464.72/12,795.80
  6. Step 6: Final answer
    x = 8,108.40

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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.