Home / 13,011.12-19,519.20-4,243.68

Finding the Fourth Proportional to 13,011.12, 19,519.20 and 4,243.68

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Solution

The fourth proportional to 13,011.12, 19,519.20 and 4,243.68 is: 6,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.12 : 19,519.20 = 4,243.68 : x
  2. Step 2: Convert to fraction form
    13,011.12/19,519.20 = 4,243.68/x
  3. Step 3: Cross multiply
    13,011.12x = 19,519.20 × 4,243.68
  4. Step 4: Simplify right side
    13,011.12x = 82,833,238.66
  5. Step 5: Solve for x
    x = 82,833,238.66/13,011.12
  6. Step 6: Final answer
    x = 6,366.34

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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.