Home / 13,928.28-20,896.08-5,165.70

Finding the Fourth Proportional to 13,928.28, 20,896.08 and 5,165.70

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Solution

The fourth proportional to 13,928.28, 20,896.08 and 5,165.70 is: 7,749.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.28 : 20,896.08 = 5,165.70 : x
  2. Step 2: Convert to fraction form
    13,928.28/20,896.08 = 5,165.70/x
  3. Step 3: Cross multiply
    13,928.28x = 20,896.08 × 5,165.70
  4. Step 4: Simplify right side
    13,928.28x = 107,942,880.46
  5. Step 5: Solve for x
    x = 107,942,880.46/13,928.28
  6. Step 6: Final answer
    x = 7,749.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.