Home / 13,218.26-19,809.77-6,976.80

Finding the Fourth Proportional to 13,218.26, 19,809.77 and 6,976.80

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Solution

The fourth proportional to 13,218.26, 19,809.77 and 6,976.80 is: 10,455.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.26 : 19,809.77 = 6,976.80 : x
  2. Step 2: Convert to fraction form
    13,218.26/19,809.77 = 6,976.80/x
  3. Step 3: Cross multiply
    13,218.26x = 19,809.77 × 6,976.80
  4. Step 4: Simplify right side
    13,218.26x = 138,208,768.45
  5. Step 5: Solve for x
    x = 138,208,768.45/13,218.26
  6. Step 6: Final answer
    x = 10,455.90

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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.