Home / 13,011.20-19,502.40-6,768.80

Finding the Fourth Proportional to 13,011.20, 19,502.40 and 6,768.80

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Solution

The fourth proportional to 13,011.20, 19,502.40 and 6,768.80 is: 10,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.20 : 19,502.40 = 6,768.80 : x
  2. Step 2: Convert to fraction form
    13,011.20/19,502.40 = 6,768.80/x
  3. Step 3: Cross multiply
    13,011.20x = 19,502.40 × 6,768.80
  4. Step 4: Simplify right side
    13,011.20x = 132,007,845.12
  5. Step 5: Solve for x
    x = 132,007,845.12/13,011.20
  6. Step 6: Final answer
    x = 10,145.71

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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.