Home / 13,969.20-20,946.60-5,199.60

Finding the Fourth Proportional to 13,969.20, 20,946.60 and 5,199.60

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Solution

The fourth proportional to 13,969.20, 20,946.60 and 5,199.60 is: 7,796.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.20 : 20,946.60 = 5,199.60 : x
  2. Step 2: Convert to fraction form
    13,969.20/20,946.60 = 5,199.60/x
  3. Step 3: Cross multiply
    13,969.20x = 20,946.60 × 5,199.60
  4. Step 4: Simplify right side
    13,969.20x = 108,913,941.36
  5. Step 5: Solve for x
    x = 108,913,941.36/13,969.20
  6. Step 6: Final answer
    x = 7,796.72

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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.