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Finding the Fourth Proportional to 13,892,291.20, 20,838,436.80 and 3,794,912.20

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Solution

The fourth proportional to 13,892,291.20, 20,838,436.80 and 3,794,912.20 is: 5,692,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892,291.20 : 20,838,436.80 = 3,794,912.20 : x
  2. Step 2: Convert to fraction form
    13,892,291.20/20,838,436.80 = 3,794,912.20/x
  3. Step 3: Cross multiply
    13,892,291.20x = 20,838,436.80 × 3,794,912.20
  4. Step 4: Simplify right side
    13,892,291.20x = 79,080,038,041,248.97
  5. Step 5: Solve for x
    x = 79,080,038,041,248.97/13,892,291.20
  6. Step 6: Final answer
    x = 5,692,368.30

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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.