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Finding the Fourth Proportional to 13,907,085.30, 20,869,485.30 and 8,149,807.80

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Solution

The fourth proportional to 13,907,085.30, 20,869,485.30 and 8,149,807.80 is: 12,229,902.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907,085.30 : 20,869,485.30 = 8,149,807.80 : x
  2. Step 2: Convert to fraction form
    13,907,085.30/20,869,485.30 = 8,149,807.80/x
  3. Step 3: Cross multiply
    13,907,085.30x = 20,869,485.30 × 8,149,807.80
  4. Step 4: Simplify right side
    13,907,085.30x = 170,082,294,079,925.34
  5. Step 5: Solve for x
    x = 170,082,294,079,925.34/13,907,085.30
  6. Step 6: Final answer
    x = 12,229,902.27

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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.