Home / 13,169.90-19,760.70-6,928.40

Finding the Fourth Proportional to 13,169.90, 19,760.70 and 6,928.40

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Solution

The fourth proportional to 13,169.90, 19,760.70 and 6,928.40 is: 10,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.90 : 19,760.70 = 6,928.40 : x
  2. Step 2: Convert to fraction form
    13,169.90/19,760.70 = 6,928.40/x
  3. Step 3: Cross multiply
    13,169.90x = 19,760.70 × 6,928.40
  4. Step 4: Simplify right side
    13,169.90x = 136,910,033.88
  5. Step 5: Solve for x
    x = 136,910,033.88/13,169.90
  6. Step 6: Final answer
    x = 10,395.68

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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.