Home / 20,850.77-31,276.25-5,268.40

Finding the Fourth Proportional to 20,850.77, 31,276.25 and 5,268.40

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Solution

The fourth proportional to 20,850.77, 31,276.25 and 5,268.40 is: 7,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.77 : 31,276.25 = 5,268.40 : x
  2. Step 2: Convert to fraction form
    20,850.77/31,276.25 = 5,268.40/x
  3. Step 3: Cross multiply
    20,850.77x = 31,276.25 × 5,268.40
  4. Step 4: Simplify right side
    20,850.77x = 164,775,795.50
  5. Step 5: Solve for x
    x = 164,775,795.50/20,850.77
  6. Step 6: Final answer
    x = 7,902.62

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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.