Home / 11,921.04-17,874.63-7,976.81

Finding the Fourth Proportional to 11,921.04, 17,874.63 and 7,976.81

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Solution

The fourth proportional to 11,921.04, 17,874.63 and 7,976.81 is: 11,960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.04 : 17,874.63 = 7,976.81 : x
  2. Step 2: Convert to fraction form
    11,921.04/17,874.63 = 7,976.81/x
  3. Step 3: Cross multiply
    11,921.04x = 17,874.63 × 7,976.81
  4. Step 4: Simplify right side
    11,921.04x = 142,582,437.96
  5. Step 5: Solve for x
    x = 142,582,437.96/11,921.04
  6. Step 6: Final answer
    x = 11,960.57

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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.