Home / 13,993.90-20,986.44-4,631.80

Finding the Fourth Proportional to 13,993.90, 20,986.44 and 4,631.80

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Solution

The fourth proportional to 13,993.90, 20,986.44 and 4,631.80 is: 6,946.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.90 : 20,986.44 = 4,631.80 : x
  2. Step 2: Convert to fraction form
    13,993.90/20,986.44 = 4,631.80/x
  3. Step 3: Cross multiply
    13,993.90x = 20,986.44 × 4,631.80
  4. Step 4: Simplify right side
    13,993.90x = 97,204,992.79
  5. Step 5: Solve for x
    x = 97,204,992.79/13,993.90
  6. Step 6: Final answer
    x = 6,946.24

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1.5x scale

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.