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Finding the Fourth Proportional to 13,361,841.70, 20,042,762.55 and 9,960,619.30

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Solution

The fourth proportional to 13,361,841.70, 20,042,762.55 and 9,960,619.30 is: 14,940,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361,841.70 : 20,042,762.55 = 9,960,619.30 : x
  2. Step 2: Convert to fraction form
    13,361,841.70/20,042,762.55 = 9,960,619.30/x
  3. Step 3: Cross multiply
    13,361,841.70x = 20,042,762.55 × 9,960,619.30
  4. Step 4: Simplify right side
    13,361,841.70x = 199,638,327,480,847.25
  5. Step 5: Solve for x
    x = 199,638,327,480,847.25/13,361,841.70
  6. Step 6: Final answer
    x = 14,940,928.95

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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.