Home / 13,166.40-19,717.60-6,996.80

Finding the Fourth Proportional to 13,166.40, 19,717.60 and 6,996.80

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Solution

The fourth proportional to 13,166.40, 19,717.60 and 6,996.80 is: 10,478.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.40 : 19,717.60 = 6,996.80 : x
  2. Step 2: Convert to fraction form
    13,166.40/19,717.60 = 6,996.80/x
  3. Step 3: Cross multiply
    13,166.40x = 19,717.60 × 6,996.80
  4. Step 4: Simplify right side
    13,166.40x = 137,960,103.68
  5. Step 5: Solve for x
    x = 137,960,103.68/13,166.40
  6. Step 6: Final answer
    x = 10,478.19

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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.