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Finding the Fourth Proportional to 13,195.80, 19,793.70 and 5,410.20

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Solution

The fourth proportional to 13,195.80, 19,793.70 and 5,410.20 is: 8,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.80 : 19,793.70 = 5,410.20 : x
  2. Step 2: Convert to fraction form
    13,195.80/19,793.70 = 5,410.20/x
  3. Step 3: Cross multiply
    13,195.80x = 19,793.70 × 5,410.20
  4. Step 4: Simplify right side
    13,195.80x = 107,087,875.74
  5. Step 5: Solve for x
    x = 107,087,875.74/13,195.80
  6. Step 6: Final answer
    x = 8,115.30

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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.