Home / 13,137.12-19,685.42-6,465.96

Finding the Fourth Proportional to 13,137.12, 19,685.42 and 6,465.96

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Solution

The fourth proportional to 13,137.12, 19,685.42 and 6,465.96 is: 9,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.12 : 19,685.42 = 6,465.96 : x
  2. Step 2: Convert to fraction form
    13,137.12/19,685.42 = 6,465.96/x
  3. Step 3: Cross multiply
    13,137.12x = 19,685.42 × 6,465.96
  4. Step 4: Simplify right side
    13,137.12x = 127,285,138.30
  5. Step 5: Solve for x
    x = 127,285,138.30/13,137.12
  6. Step 6: Final answer
    x = 9,688.97

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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.