Home / 13,631.08-20,448.78-4,270.36

Finding the Fourth Proportional to 13,631.08, 20,448.78 and 4,270.36

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Solution

The fourth proportional to 13,631.08, 20,448.78 and 4,270.36 is: 6,406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.08 : 20,448.78 = 4,270.36 : x
  2. Step 2: Convert to fraction form
    13,631.08/20,448.78 = 4,270.36/x
  3. Step 3: Cross multiply
    13,631.08x = 20,448.78 × 4,270.36
  4. Step 4: Simplify right side
    13,631.08x = 87,323,652.16
  5. Step 5: Solve for x
    x = 87,323,652.16/13,631.08
  6. Step 6: Final answer
    x = 6,406.22

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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.