Home / 13,230.42-18,257.45-7,928.16

Finding the Fourth Proportional to 13,230.42, 18,257.45 and 7,928.16

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Solution

The fourth proportional to 13,230.42, 18,257.45 and 7,928.16 is: 10,940.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.42 : 18,257.45 = 7,928.16 : x
  2. Step 2: Convert to fraction form
    13,230.42/18,257.45 = 7,928.16/x
  3. Step 3: Cross multiply
    13,230.42x = 18,257.45 × 7,928.16
  4. Step 4: Simplify right side
    13,230.42x = 144,747,945.15
  5. Step 5: Solve for x
    x = 144,747,945.15/13,230.42
  6. Step 6: Final answer
    x = 10,940.54

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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.