Home / 13,569.25-20,356.80-4,209.09

Finding the Fourth Proportional to 13,569.25, 20,356.80 and 4,209.09

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Solution

The fourth proportional to 13,569.25, 20,356.80 and 4,209.09 is: 6,314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.25 : 20,356.80 = 4,209.09 : x
  2. Step 2: Convert to fraction form
    13,569.25/20,356.80 = 4,209.09/x
  3. Step 3: Cross multiply
    13,569.25x = 20,356.80 × 4,209.09
  4. Step 4: Simplify right side
    13,569.25x = 85,683,603.31
  5. Step 5: Solve for x
    x = 85,683,603.31/13,569.25
  6. Step 6: Final answer
    x = 6,314.54

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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.