Home / 13,129.10-19,693.80-3,268.40

Finding the Fourth Proportional to 13,129.10, 19,693.80 and 3,268.40

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Solution

The fourth proportional to 13,129.10, 19,693.80 and 3,268.40 is: 4,902.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.10 : 19,693.80 = 3,268.40 : x
  2. Step 2: Convert to fraction form
    13,129.10/19,693.80 = 3,268.40/x
  3. Step 3: Cross multiply
    13,129.10x = 19,693.80 × 3,268.40
  4. Step 4: Simplify right side
    13,129.10x = 64,367,215.92
  5. Step 5: Solve for x
    x = 64,367,215.92/13,129.10
  6. Step 6: Final answer
    x = 4,902.64

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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.