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Finding the Fourth Proportional to 15,804.84, 21,810.96 and 8,730.84

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Solution

The fourth proportional to 15,804.84, 21,810.96 and 8,730.84 is: 12,048.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.84 : 21,810.96 = 8,730.84 : x
  2. Step 2: Convert to fraction form
    15,804.84/21,810.96 = 8,730.84/x
  3. Step 3: Cross multiply
    15,804.84x = 21,810.96 × 8,730.84
  4. Step 4: Simplify right side
    15,804.84x = 190,428,002.01
  5. Step 5: Solve for x
    x = 190,428,002.01/15,804.84
  6. Step 6: Final answer
    x = 12,048.71

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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.