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Finding the Fourth Proportional to 15,804.57, 21,812.49 and 9,090.07

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Solution

The fourth proportional to 15,804.57, 21,812.49 and 9,090.07 is: 12,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.57 : 21,812.49 = 9,090.07 : x
  2. Step 2: Convert to fraction form
    15,804.57/21,812.49 = 9,090.07/x
  3. Step 3: Cross multiply
    15,804.57x = 21,812.49 × 9,090.07
  4. Step 4: Simplify right side
    15,804.57x = 198,277,129.14
  5. Step 5: Solve for x
    x = 198,277,129.14/15,804.57
  6. Step 6: Final answer
    x = 12,545.56

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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.