Home / 13,928.56-19,219.04-9,211.12

Finding the Fourth Proportional to 13,928.56, 19,219.04 and 9,211.12

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Solution

The fourth proportional to 13,928.56, 19,219.04 and 9,211.12 is: 12,709.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.56 : 19,219.04 = 9,211.12 : x
  2. Step 2: Convert to fraction form
    13,928.56/19,219.04 = 9,211.12/x
  3. Step 3: Cross multiply
    13,928.56x = 19,219.04 × 9,211.12
  4. Step 4: Simplify right side
    13,928.56x = 177,028,883.72
  5. Step 5: Solve for x
    x = 177,028,883.72/13,928.56
  6. Step 6: Final answer
    x = 12,709.78

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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.