Home / 13,928.30-19,222.76-7,958.60

Finding the Fourth Proportional to 13,928.30, 19,222.76 and 7,958.60

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Solution

The fourth proportional to 13,928.30, 19,222.76 and 7,958.60 is: 10,983.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.30 : 19,222.76 = 7,958.60 : x
  2. Step 2: Convert to fraction form
    13,928.30/19,222.76 = 7,958.60/x
  3. Step 3: Cross multiply
    13,928.30x = 19,222.76 × 7,958.60
  4. Step 4: Simplify right side
    13,928.30x = 152,986,217.94
  5. Step 5: Solve for x
    x = 152,986,217.94/13,928.30
  6. Step 6: Final answer
    x = 10,983.84

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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.