Home / 12,291,287.20-18,436,930.80-8,509,040.80

Finding the Fourth Proportional to 12,291,287.20, 18,436,930.80 and 8,509,040.80

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Solution

The fourth proportional to 12,291,287.20, 18,436,930.80 and 8,509,040.80 is: 12,763,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291,287.20 : 18,436,930.80 = 8,509,040.80 : x
  2. Step 2: Convert to fraction form
    12,291,287.20/18,436,930.80 = 8,509,040.80/x
  3. Step 3: Cross multiply
    12,291,287.20x = 18,436,930.80 × 8,509,040.80
  4. Step 4: Simplify right side
    12,291,287.20x = 156,880,596,403,976.66
  5. Step 5: Solve for x
    x = 156,880,596,403,976.66/12,291,287.20
  6. Step 6: Final answer
    x = 12,763,561.20

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1.5x scale

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.