Home / 20,777.21-31,177.16-12,029.21

Finding the Fourth Proportional to 20,777.21, 31,177.16 and 12,029.21

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Solution

The fourth proportional to 20,777.21, 31,177.16 and 12,029.21 is: 18,050.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.21 : 31,177.16 = 12,029.21 : x
  2. Step 2: Convert to fraction form
    20,777.21/31,177.16 = 12,029.21/x
  3. Step 3: Cross multiply
    20,777.21x = 31,177.16 × 12,029.21
  4. Step 4: Simplify right side
    20,777.21x = 375,036,544.70
  5. Step 5: Solve for x
    x = 375,036,544.70/20,777.21
  6. Step 6: Final answer
    x = 18,050.38

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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.