Home / 9,100.32-13,579.50-8,119.68

Finding the Fourth Proportional to 9,100.32, 13,579.50 and 8,119.68

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Solution

The fourth proportional to 9,100.32, 13,579.50 and 8,119.68 is: 12,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,100.32 : 13,579.50 = 8,119.68 : x
  2. Step 2: Convert to fraction form
    9,100.32/13,579.50 = 8,119.68/x
  3. Step 3: Cross multiply
    9,100.32x = 13,579.50 × 8,119.68
  4. Step 4: Simplify right side
    9,100.32x = 110,261,194.56
  5. Step 5: Solve for x
    x = 110,261,194.56/9,100.32
  6. Step 6: Final answer
    x = 12,116.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.