Home / 13,080,960.20-19,621,440.30-12,528,086.60

Finding the Fourth Proportional to 13,080,960.20, 19,621,440.30 and 12,528,086.60

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Solution

The fourth proportional to 13,080,960.20, 19,621,440.30 and 12,528,086.60 is: 18,792,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080,960.20 : 19,621,440.30 = 12,528,086.60 : x
  2. Step 2: Convert to fraction form
    13,080,960.20/19,621,440.30 = 12,528,086.60/x
  3. Step 3: Cross multiply
    13,080,960.20x = 19,621,440.30 × 12,528,086.60
  4. Step 4: Simplify right side
    13,080,960.20x = 245,819,103,295,129.97
  5. Step 5: Solve for x
    x = 245,819,103,295,129.97/13,080,960.20
  6. Step 6: Final answer
    x = 18,792,129.90

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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.