Home / 13,829.20-20,743.80-9,941.20

Finding the Fourth Proportional to 13,829.20, 20,743.80 and 9,941.20

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Solution

The fourth proportional to 13,829.20, 20,743.80 and 9,941.20 is: 14,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.20 : 20,743.80 = 9,941.20 : x
  2. Step 2: Convert to fraction form
    13,829.20/20,743.80 = 9,941.20/x
  3. Step 3: Cross multiply
    13,829.20x = 20,743.80 × 9,941.20
  4. Step 4: Simplify right side
    13,829.20x = 206,218,264.56
  5. Step 5: Solve for x
    x = 206,218,264.56/13,829.20
  6. Step 6: Final answer
    x = 14,911.80

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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.