Home / 20,937.40-31,406.10-18,604.60

Finding the Fourth Proportional to 20,937.40, 31,406.10 and 18,604.60

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Solution

The fourth proportional to 20,937.40, 31,406.10 and 18,604.60 is: 27,906.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.40 : 31,406.10 = 18,604.60 : x
  2. Step 2: Convert to fraction form
    20,937.40/31,406.10 = 18,604.60/x
  3. Step 3: Cross multiply
    20,937.40x = 31,406.10 × 18,604.60
  4. Step 4: Simplify right side
    20,937.40x = 584,297,928.06
  5. Step 5: Solve for x
    x = 584,297,928.06/20,937.40
  6. Step 6: Final answer
    x = 27,906.90

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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.