Home / 20,218,270.70-30,327,406.05-12,565,520.30

Finding the Fourth Proportional to 20,218,270.70, 30,327,406.05 and 12,565,520.30

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Solution

The fourth proportional to 20,218,270.70, 30,327,406.05 and 12,565,520.30 is: 18,848,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,270.70 : 30,327,406.05 = 12,565,520.30 : x
  2. Step 2: Convert to fraction form
    20,218,270.70/30,327,406.05 = 12,565,520.30/x
  3. Step 3: Cross multiply
    20,218,270.70x = 30,327,406.05 × 12,565,520.30
  4. Step 4: Simplify right side
    20,218,270.70x = 381,079,636,367,617.88
  5. Step 5: Solve for x
    x = 381,079,636,367,617.88/20,218,270.70
  6. Step 6: Final answer
    x = 18,848,280.45

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Similar ratio
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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.