Home / 13,288.24-19,935.63-3,928.21

Finding the Fourth Proportional to 13,288.24, 19,935.63 and 3,928.21

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Solution

The fourth proportional to 13,288.24, 19,935.63 and 3,928.21 is: 5,893.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.24 : 19,935.63 = 3,928.21 : x
  2. Step 2: Convert to fraction form
    13,288.24/19,935.63 = 3,928.21/x
  3. Step 3: Cross multiply
    13,288.24x = 19,935.63 × 3,928.21
  4. Step 4: Simplify right side
    13,288.24x = 78,311,341.12
  5. Step 5: Solve for x
    x = 78,311,341.12/13,288.24
  6. Step 6: Final answer
    x = 5,893.28

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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.