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Finding the Fourth Proportional to 21,525,353.11, 29,704,978.74 and 11,735,805.31

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Solution

The fourth proportional to 21,525,353.11, 29,704,978.74 and 11,735,805.31 is: 16,195,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525,353.11 : 29,704,978.74 = 11,735,805.31 : x
  2. Step 2: Convert to fraction form
    21,525,353.11/29,704,978.74 = 11,735,805.31/x
  3. Step 3: Cross multiply
    21,525,353.11x = 29,704,978.74 × 11,735,805.31
  4. Step 4: Simplify right side
    21,525,353.11x = 348,611,847,230,329.12
  5. Step 5: Solve for x
    x = 348,611,847,230,329.12/21,525,353.11
  6. Step 6: Final answer
    x = 16,195,406.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.