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Finding the Fourth Proportional to 22,601.16, 31,173.93 and 15,515.28

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Solution

The fourth proportional to 22,601.16, 31,173.93 and 15,515.28 is: 21,400.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,601.16 : 31,173.93 = 15,515.28 : x
  2. Step 2: Convert to fraction form
    22,601.16/31,173.93 = 15,515.28/x
  3. Step 3: Cross multiply
    22,601.16x = 31,173.93 × 15,515.28
  4. Step 4: Simplify right side
    22,601.16x = 483,672,252.65
  5. Step 5: Solve for x
    x = 483,672,252.65/22,601.16
  6. Step 6: Final answer
    x = 21,400.33

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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.