Home / 20,630,294.64-28,468,138.88-11,929,031.60

Finding the Fourth Proportional to 20,630,294.64, 28,468,138.88 and 11,929,031.60

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Solution

The fourth proportional to 20,630,294.64, 28,468,138.88 and 11,929,031.60 is: 16,461,099.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630,294.64 : 28,468,138.88 = 11,929,031.60 : x
  2. Step 2: Convert to fraction form
    20,630,294.64/28,468,138.88 = 11,929,031.60/x
  3. Step 3: Cross multiply
    20,630,294.64x = 28,468,138.88 × 11,929,031.60
  4. Step 4: Simplify right side
    20,630,294.64x = 339,597,328,292,708.56
  5. Step 5: Solve for x
    x = 339,597,328,292,708.56/20,630,294.64
  6. Step 6: Final answer
    x = 16,461,099.28

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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.