Home / 13,285.04-19,928.78-3,424.35

Finding the Fourth Proportional to 13,285.04, 19,928.78 and 3,424.35

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Solution

The fourth proportional to 13,285.04, 19,928.78 and 3,424.35 is: 5,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.04 : 19,928.78 = 3,424.35 : x
  2. Step 2: Convert to fraction form
    13,285.04/19,928.78 = 3,424.35/x
  3. Step 3: Cross multiply
    13,285.04x = 19,928.78 × 3,424.35
  4. Step 4: Simplify right side
    13,285.04x = 68,243,100.67
  5. Step 5: Solve for x
    x = 68,243,100.67/13,285.04
  6. Step 6: Final answer
    x = 5,136.84

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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.