Home / 12,855.36-17,740.56-7,550.28

Finding the Fourth Proportional to 12,855.36, 17,740.56 and 7,550.28

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Solution

The fourth proportional to 12,855.36, 17,740.56 and 7,550.28 is: 10,419.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.36 : 17,740.56 = 7,550.28 : x
  2. Step 2: Convert to fraction form
    12,855.36/17,740.56 = 7,550.28/x
  3. Step 3: Cross multiply
    12,855.36x = 17,740.56 × 7,550.28
  4. Step 4: Simplify right side
    12,855.36x = 133,946,195.36
  5. Step 5: Solve for x
    x = 133,946,195.36/12,855.36
  6. Step 6: Final answer
    x = 10,419.48

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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.