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Finding the Fourth Proportional to 15,960.63, 22,019.69 and 9,243.81

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Solution

The fourth proportional to 15,960.63, 22,019.69 and 9,243.81 is: 12,752.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,960.63 : 22,019.69 = 9,243.81 : x
  2. Step 2: Convert to fraction form
    15,960.63/22,019.69 = 9,243.81/x
  3. Step 3: Cross multiply
    15,960.63x = 22,019.69 × 9,243.81
  4. Step 4: Simplify right side
    15,960.63x = 203,545,830.62
  5. Step 5: Solve for x
    x = 203,545,830.62/15,960.63
  6. Step 6: Final answer
    x = 12,752.99

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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.