Home / 20,510.37-30,765.53-8,021.64

Finding the Fourth Proportional to 20,510.37, 30,765.53 and 8,021.64

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Solution

The fourth proportional to 20,510.37, 30,765.53 and 8,021.64 is: 12,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.37 : 30,765.53 = 8,021.64 : x
  2. Step 2: Convert to fraction form
    20,510.37/30,765.53 = 8,021.64/x
  3. Step 3: Cross multiply
    20,510.37x = 30,765.53 × 8,021.64
  4. Step 4: Simplify right side
    20,510.37x = 246,789,965.96
  5. Step 5: Solve for x
    x = 246,789,965.96/20,510.37
  6. Step 6: Final answer
    x = 12,032.45

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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.