Home / 20,190,052.70-30,285,079.05-12,127,895.90

Finding the Fourth Proportional to 20,190,052.70, 30,285,079.05 and 12,127,895.90

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Solution

The fourth proportional to 20,190,052.70, 30,285,079.05 and 12,127,895.90 is: 18,191,843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190,052.70 : 30,285,079.05 = 12,127,895.90 : x
  2. Step 2: Convert to fraction form
    20,190,052.70/30,285,079.05 = 12,127,895.90/x
  3. Step 3: Cross multiply
    20,190,052.70x = 30,285,079.05 × 12,127,895.90
  4. Step 4: Simplify right side
    20,190,052.70x = 367,294,286,041,670.94
  5. Step 5: Solve for x
    x = 367,294,286,041,670.94/20,190,052.70
  6. Step 6: Final answer
    x = 18,191,843.85

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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.