Home / 13,435.20-20,143.68-6,848.64

Finding the Fourth Proportional to 13,435.20, 20,143.68 and 6,848.64

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Solution

The fourth proportional to 13,435.20, 20,143.68 and 6,848.64 is: 10,268.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.20 : 20,143.68 = 6,848.64 : x
  2. Step 2: Convert to fraction form
    13,435.20/20,143.68 = 6,848.64/x
  3. Step 3: Cross multiply
    13,435.20x = 20,143.68 × 6,848.64
  4. Step 4: Simplify right side
    13,435.20x = 137,956,812.60
  5. Step 5: Solve for x
    x = 137,956,812.60/13,435.20
  6. Step 6: Final answer
    x = 10,268.31

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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.