Home / 12,412.53-17,128.80-6,747.23

Finding the Fourth Proportional to 12,412.53, 17,128.80 and 6,747.23

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Solution

The fourth proportional to 12,412.53, 17,128.80 and 6,747.23 is: 9,310.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.53 : 17,128.80 = 6,747.23 : x
  2. Step 2: Convert to fraction form
    12,412.53/17,128.80 = 6,747.23/x
  3. Step 3: Cross multiply
    12,412.53x = 17,128.80 × 6,747.23
  4. Step 4: Simplify right side
    12,412.53x = 115,571,996.05
  5. Step 5: Solve for x
    x = 115,571,996.05/12,412.53
  6. Step 6: Final answer
    x = 9,310.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.