Home / 10,976.63-15,121.01-8,321.45

Finding the Fourth Proportional to 10,976.63, 15,121.01 and 8,321.45

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Solution

The fourth proportional to 10,976.63, 15,121.01 and 8,321.45 is: 11,463.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,976.63 : 15,121.01 = 8,321.45 : x
  2. Step 2: Convert to fraction form
    10,976.63/15,121.01 = 8,321.45/x
  3. Step 3: Cross multiply
    10,976.63x = 15,121.01 × 8,321.45
  4. Step 4: Simplify right side
    10,976.63x = 125,828,653.06
  5. Step 5: Solve for x
    x = 125,828,653.06/10,976.63
  6. Step 6: Final answer
    x = 11,463.33

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Double scale
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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.