Home / 20,687,783.20-31,045,671.60-9,322,381.60

Finding the Fourth Proportional to 20,687,783.20, 31,045,671.60 and 9,322,381.60

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Solution

The fourth proportional to 20,687,783.20, 31,045,671.60 and 9,322,381.60 is: 13,989,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,783.20 : 31,045,671.60 = 9,322,381.60 : x
  2. Step 2: Convert to fraction form
    20,687,783.20/31,045,671.60 = 9,322,381.60/x
  3. Step 3: Cross multiply
    20,687,783.20x = 31,045,671.60 × 9,322,381.60
  4. Step 4: Simplify right side
    20,687,783.20x = 289,419,597,683,482.56
  5. Step 5: Solve for x
    x = 289,419,597,683,482.56/20,687,783.20
  6. Step 6: Final answer
    x = 13,989,879.67

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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.