Home / 28,106,739.20-42,175,855.20-11,929,937.60

Finding the Fourth Proportional to 28,106,739.20, 42,175,855.20 and 11,929,937.60

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Solution

The fourth proportional to 28,106,739.20, 42,175,855.20 and 11,929,937.60 is: 17,901,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106,739.20 : 42,175,855.20 = 11,929,937.60 : x
  2. Step 2: Convert to fraction form
    28,106,739.20/42,175,855.20 = 11,929,937.60/x
  3. Step 3: Cross multiply
    28,106,739.20x = 42,175,855.20 × 11,929,937.60
  4. Step 4: Simplify right side
    28,106,739.20x = 503,155,320,762,635.56
  5. Step 5: Solve for x
    x = 503,155,320,762,635.56/28,106,739.20
  6. Step 6: Final answer
    x = 17,901,589.98

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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.