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Finding the Fourth Proportional to 13,449.94, 20,178.15 and 4,215.94

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Solution

The fourth proportional to 13,449.94, 20,178.15 and 4,215.94 is: 6,324.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.94 : 20,178.15 = 4,215.94 : x
  2. Step 2: Convert to fraction form
    13,449.94/20,178.15 = 4,215.94/x
  3. Step 3: Cross multiply
    13,449.94x = 20,178.15 × 4,215.94
  4. Step 4: Simplify right side
    13,449.94x = 85,069,808.73
  5. Step 5: Solve for x
    x = 85,069,808.73/13,449.94
  6. Step 6: Final answer
    x = 6,324.92

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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.