Home / 12,467,570.20-18,715,352.10-9,640,216.60

Finding the Fourth Proportional to 12,467,570.20, 18,715,352.10 and 9,640,216.60

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Solution

The fourth proportional to 12,467,570.20, 18,715,352.10 and 9,640,216.60 is: 14,471,147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,467,570.20 : 18,715,352.10 = 9,640,216.60 : x
  2. Step 2: Convert to fraction form
    12,467,570.20/18,715,352.10 = 9,640,216.60/x
  3. Step 3: Cross multiply
    12,467,570.20x = 18,715,352.10 × 9,640,216.60
  4. Step 4: Simplify right side
    12,467,570.20x = 180,420,047,989,264.88
  5. Step 5: Solve for x
    x = 180,420,047,989,264.88/12,467,570.20
  6. Step 6: Final answer
    x = 14,471,147.55

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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.