Home / 13,928.62-19,222.55-7,960.54

Finding the Fourth Proportional to 13,928.62, 19,222.55 and 7,960.54

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Solution

The fourth proportional to 13,928.62, 19,222.55 and 7,960.54 is: 10,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.62 : 19,222.55 = 7,960.54 : x
  2. Step 2: Convert to fraction form
    13,928.62/19,222.55 = 7,960.54/x
  3. Step 3: Cross multiply
    13,928.62x = 19,222.55 × 7,960.54
  4. Step 4: Simplify right side
    13,928.62x = 153,021,878.18
  5. Step 5: Solve for x
    x = 153,021,878.18/13,928.62
  6. Step 6: Final answer
    x = 10,986.15

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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.