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Finding the Fourth Proportional to 10,651,967.20, 15,977,950.80 and 8,880,497.20

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Solution

The fourth proportional to 10,651,967.20, 15,977,950.80 and 8,880,497.20 is: 13,320,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,651,967.20 : 15,977,950.80 = 8,880,497.20 : x
  2. Step 2: Convert to fraction form
    10,651,967.20/15,977,950.80 = 8,880,497.20/x
  3. Step 3: Cross multiply
    10,651,967.20x = 15,977,950.80 × 8,880,497.20
  4. Step 4: Simplify right side
    10,651,967.20x = 141,892,147,341,137.75
  5. Step 5: Solve for x
    x = 141,892,147,341,137.75/10,651,967.20
  6. Step 6: Final answer
    x = 13,320,745.80

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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.