Home / 21,197.40-31,796.10-5,616.60

Finding the Fourth Proportional to 21,197.40, 31,796.10 and 5,616.60

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Solution

The fourth proportional to 21,197.40, 31,796.10 and 5,616.60 is: 8,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.40 : 31,796.10 = 5,616.60 : x
  2. Step 2: Convert to fraction form
    21,197.40/31,796.10 = 5,616.60/x
  3. Step 3: Cross multiply
    21,197.40x = 31,796.10 × 5,616.60
  4. Step 4: Simplify right side
    21,197.40x = 178,585,975.26
  5. Step 5: Solve for x
    x = 178,585,975.26/21,197.40
  6. Step 6: Final answer
    x = 8,424.90

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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.