Home / 20,520,169.20-30,764,701.80-10,430,031.60

Finding the Fourth Proportional to 20,520,169.20, 30,764,701.80 and 10,430,031.60

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Solution

The fourth proportional to 20,520,169.20, 30,764,701.80 and 10,430,031.60 is: 15,637,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,169.20 : 30,764,701.80 = 10,430,031.60 : x
  2. Step 2: Convert to fraction form
    20,520,169.20/30,764,701.80 = 10,430,031.60/x
  3. Step 3: Cross multiply
    20,520,169.20x = 30,764,701.80 × 10,430,031.60
  4. Step 4: Simplify right side
    20,520,169.20x = 320,876,811,938,576.88
  5. Step 5: Solve for x
    x = 320,876,811,938,576.88/20,520,169.20
  6. Step 6: Final answer
    x = 15,637,142.60

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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.