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Finding the Fourth Proportional to 16,656,605.20, 24,984,907.80 and 8,142,403.60

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Solution

The fourth proportional to 16,656,605.20, 24,984,907.80 and 8,142,403.60 is: 12,213,605.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,656,605.20 : 24,984,907.80 = 8,142,403.60 : x
  2. Step 2: Convert to fraction form
    16,656,605.20/24,984,907.80 = 8,142,403.60/x
  3. Step 3: Cross multiply
    16,656,605.20x = 24,984,907.80 × 8,142,403.60
  4. Step 4: Simplify right side
    16,656,605.20x = 203,437,203,216,388.06
  5. Step 5: Solve for x
    x = 203,437,203,216,388.06/16,656,605.20
  6. Step 6: Final answer
    x = 12,213,605.40

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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.