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Finding the Fourth Proportional to 14,202,811.20, 21,314,714.40 and 9,408,907.20

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Solution

The fourth proportional to 14,202,811.20, 21,314,714.40 and 9,408,907.20 is: 14,120,315.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,202,811.20 : 21,314,714.40 = 9,408,907.20 : x
  2. Step 2: Convert to fraction form
    14,202,811.20/21,314,714.40 = 9,408,907.20/x
  3. Step 3: Cross multiply
    14,202,811.20x = 21,314,714.40 × 9,408,907.20
  4. Step 4: Simplify right side
    14,202,811.20x = 200,548,169,784,103.66
  5. Step 5: Solve for x
    x = 200,548,169,784,103.66/14,202,811.20
  6. Step 6: Final answer
    x = 14,120,315.12

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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.