Home / 13,983.36-20,982.30-13,176.60

Finding the Fourth Proportional to 13,983.36, 20,982.30 and 13,176.60

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Solution

The fourth proportional to 13,983.36, 20,982.30 and 13,176.60 is: 19,771.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,983.36 : 20,982.30 = 13,176.60 : x
  2. Step 2: Convert to fraction form
    13,983.36/20,982.30 = 13,176.60/x
  3. Step 3: Cross multiply
    13,983.36x = 20,982.30 × 13,176.60
  4. Step 4: Simplify right side
    13,983.36x = 276,475,374.18
  5. Step 5: Solve for x
    x = 276,475,374.18/13,983.36
  6. Step 6: Final answer
    x = 19,771.74

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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.