Home / 10,621.90-15,928.80-3,223.90

Finding the Fourth Proportional to 10,621.90, 15,928.80 and 3,223.90

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Solution

The fourth proportional to 10,621.90, 15,928.80 and 3,223.90 is: 4,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.90 : 15,928.80 = 3,223.90 : x
  2. Step 2: Convert to fraction form
    10,621.90/15,928.80 = 3,223.90/x
  3. Step 3: Cross multiply
    10,621.90x = 15,928.80 × 3,223.90
  4. Step 4: Simplify right side
    10,621.90x = 51,352,858.32
  5. Step 5: Solve for x
    x = 51,352,858.32/10,621.90
  6. Step 6: Final answer
    x = 4,834.62

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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.