Home / 12,976.36-17,908.34-7,311.74

Finding the Fourth Proportional to 12,976.36, 17,908.34 and 7,311.74

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Solution

The fourth proportional to 12,976.36, 17,908.34 and 7,311.74 is: 10,090.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.36 : 17,908.34 = 7,311.74 : x
  2. Step 2: Convert to fraction form
    12,976.36/17,908.34 = 7,311.74/x
  3. Step 3: Cross multiply
    12,976.36x = 17,908.34 × 7,311.74
  4. Step 4: Simplify right side
    12,976.36x = 130,940,999.81
  5. Step 5: Solve for x
    x = 130,940,999.81/12,976.36
  6. Step 6: Final answer
    x = 10,090.74

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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.