Home / 13,268.30-19,905.68-5,479.34

Finding the Fourth Proportional to 13,268.30, 19,905.68 and 5,479.34

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Solution

The fourth proportional to 13,268.30, 19,905.68 and 5,479.34 is: 8,220.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.30 : 19,905.68 = 5,479.34 : x
  2. Step 2: Convert to fraction form
    13,268.30/19,905.68 = 5,479.34/x
  3. Step 3: Cross multiply
    13,268.30x = 19,905.68 × 5,479.34
  4. Step 4: Simplify right side
    13,268.30x = 109,069,902.82
  5. Step 5: Solve for x
    x = 109,069,902.82/13,268.30
  6. Step 6: Final answer
    x = 8,220.34

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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.