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Finding the Fourth Proportional to 15,810.94, 21,819.09 and 8,737.30

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Solution

The fourth proportional to 15,810.94, 21,819.09 and 8,737.30 is: 12,057.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.94 : 21,819.09 = 8,737.30 : x
  2. Step 2: Convert to fraction form
    15,810.94/21,819.09 = 8,737.30/x
  3. Step 3: Cross multiply
    15,810.94x = 21,819.09 × 8,737.30
  4. Step 4: Simplify right side
    15,810.94x = 190,639,935.06
  5. Step 5: Solve for x
    x = 190,639,935.06/15,810.94
  6. Step 6: Final answer
    x = 12,057.47

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