Home / 20,630,292.64-28,468,136.12-11,929,029.60

Finding the Fourth Proportional to 20,630,292.64, 28,468,136.12 and 11,929,029.60

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Solution

The fourth proportional to 20,630,292.64, 28,468,136.12 and 11,929,029.60 is: 16,461,096.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630,292.64 : 28,468,136.12 = 11,929,029.60 : x
  2. Step 2: Convert to fraction form
    20,630,292.64/28,468,136.12 = 11,929,029.60/x
  3. Step 3: Cross multiply
    20,630,292.64x = 28,468,136.12 × 11,929,029.60
  4. Step 4: Simplify right side
    20,630,292.64x = 339,597,238,432,309.12
  5. Step 5: Solve for x
    x = 339,597,238,432,309.12/20,630,292.64
  6. Step 6: Final answer
    x = 16,461,096.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.