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Finding the Fourth Proportional to 10,676,895.80, 16,015,343.70 and 8,881,806.20

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Solution

The fourth proportional to 10,676,895.80, 16,015,343.70 and 8,881,806.20 is: 13,322,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,676,895.80 : 16,015,343.70 = 8,881,806.20 : x
  2. Step 2: Convert to fraction form
    10,676,895.80/16,015,343.70 = 8,881,806.20/x
  3. Step 3: Cross multiply
    10,676,895.80x = 16,015,343.70 × 8,881,806.20
  4. Step 4: Simplify right side
    10,676,895.80x = 142,245,178,969,790.91
  5. Step 5: Solve for x
    x = 142,245,178,969,790.91/10,676,895.80
  6. Step 6: Final answer
    x = 13,322,709.30

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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.