Home / 11,881.21-16,394.96-7,100.21

Finding the Fourth Proportional to 11,881.21, 16,394.96 and 7,100.21

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Solution

The fourth proportional to 11,881.21, 16,394.96 and 7,100.21 is: 9,797.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,881.21 : 16,394.96 = 7,100.21 : x
  2. Step 2: Convert to fraction form
    11,881.21/16,394.96 = 7,100.21/x
  3. Step 3: Cross multiply
    11,881.21x = 16,394.96 × 7,100.21
  4. Step 4: Simplify right side
    11,881.21x = 116,407,585.52
  5. Step 5: Solve for x
    x = 116,407,585.52/11,881.21
  6. Step 6: Final answer
    x = 9,797.62

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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.