Home / 13,219.91-19,829.56-3,859.55

Finding the Fourth Proportional to 13,219.91, 19,829.56 and 3,859.55

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Solution

The fourth proportional to 13,219.91, 19,829.56 and 3,859.55 is: 5,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.91 : 19,829.56 = 3,859.55 : x
  2. Step 2: Convert to fraction form
    13,219.91/19,829.56 = 3,859.55/x
  3. Step 3: Cross multiply
    13,219.91x = 19,829.56 × 3,859.55
  4. Step 4: Simplify right side
    13,219.91x = 76,533,178.30
  5. Step 5: Solve for x
    x = 76,533,178.30/13,219.91
  6. Step 6: Final answer
    x = 5,789.24

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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.