Home / 20,533,672.80-30,800,509.20-12,455,769.60

Finding the Fourth Proportional to 20,533,672.80, 30,800,509.20 and 12,455,769.60

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Solution

The fourth proportional to 20,533,672.80, 30,800,509.20 and 12,455,769.60 is: 18,683,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533,672.80 : 30,800,509.20 = 12,455,769.60 : x
  2. Step 2: Convert to fraction form
    20,533,672.80/30,800,509.20 = 12,455,769.60/x
  3. Step 3: Cross multiply
    20,533,672.80x = 30,800,509.20 × 12,455,769.60
  4. Step 4: Simplify right side
    20,533,672.80x = 383,644,046,157,880.31
  5. Step 5: Solve for x
    x = 383,644,046,157,880.31/20,533,672.80
  6. Step 6: Final answer
    x = 18,683,654.40

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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.