Home / 20,903.27-31,355.30-5,108.33

Finding the Fourth Proportional to 20,903.27, 31,355.30 and 5,108.33

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Solution

The fourth proportional to 20,903.27, 31,355.30 and 5,108.33 is: 7,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.27 : 31,355.30 = 5,108.33 : x
  2. Step 2: Convert to fraction form
    20,903.27/31,355.30 = 5,108.33/x
  3. Step 3: Cross multiply
    20,903.27x = 31,355.30 × 5,108.33
  4. Step 4: Simplify right side
    20,903.27x = 160,173,310.81
  5. Step 5: Solve for x
    x = 160,173,310.81/20,903.27
  6. Step 6: Final answer
    x = 7,662.60

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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.