Home / 13,165.20-19,747.92-3,931.20

Finding the Fourth Proportional to 13,165.20, 19,747.92 and 3,931.20

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Solution

The fourth proportional to 13,165.20, 19,747.92 and 3,931.20 is: 5,896.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.20 : 19,747.92 = 3,931.20 : x
  2. Step 2: Convert to fraction form
    13,165.20/19,747.92 = 3,931.20/x
  3. Step 3: Cross multiply
    13,165.20x = 19,747.92 × 3,931.20
  4. Step 4: Simplify right side
    13,165.20x = 77,633,023.10
  5. Step 5: Solve for x
    x = 77,633,023.10/13,165.20
  6. Step 6: Final answer
    x = 5,896.84

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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.