Home / 20,765.68-31,000.60-20,036.64

Finding the Fourth Proportional to 20,765.68, 31,000.60 and 20,036.64

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Solution

The fourth proportional to 20,765.68, 31,000.60 and 20,036.64 is: 29,912.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.68 : 31,000.60 = 20,036.64 : x
  2. Step 2: Convert to fraction form
    20,765.68/31,000.60 = 20,036.64/x
  3. Step 3: Cross multiply
    20,765.68x = 31,000.60 × 20,036.64
  4. Step 4: Simplify right side
    20,765.68x = 621,147,861.98
  5. Step 5: Solve for x
    x = 621,147,861.98/20,765.68
  6. Step 6: Final answer
    x = 29,912.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.