Home / 13,639.96-20,460.32-3,779.96

Finding the Fourth Proportional to 13,639.96, 20,460.32 and 3,779.96

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Solution

The fourth proportional to 13,639.96, 20,460.32 and 3,779.96 is: 5,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.96 : 20,460.32 = 3,779.96 : x
  2. Step 2: Convert to fraction form
    13,639.96/20,460.32 = 3,779.96/x
  3. Step 3: Cross multiply
    13,639.96x = 20,460.32 × 3,779.96
  4. Step 4: Simplify right side
    13,639.96x = 77,339,172.29
  5. Step 5: Solve for x
    x = 77,339,172.29/13,639.96
  6. Step 6: Final answer
    x = 5,670.05

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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.