Home / 20,412,099.20-30,618,148.80-12,853,827.20

Finding the Fourth Proportional to 20,412,099.20, 30,618,148.80 and 12,853,827.20

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Solution

The fourth proportional to 20,412,099.20, 30,618,148.80 and 12,853,827.20 is: 19,280,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412,099.20 : 30,618,148.80 = 12,853,827.20 : x
  2. Step 2: Convert to fraction form
    20,412,099.20/30,618,148.80 = 12,853,827.20/x
  3. Step 3: Cross multiply
    20,412,099.20x = 30,618,148.80 × 12,853,827.20
  4. Step 4: Simplify right side
    20,412,099.20x = 393,560,393,859,087.38
  5. Step 5: Solve for x
    x = 393,560,393,859,087.38/20,412,099.20
  6. Step 6: Final answer
    x = 19,280,740.80

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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.