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Finding the Fourth Proportional to 19,157.21, 26,438.14 and 10,661.23

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Solution

The fourth proportional to 19,157.21, 26,438.14 and 10,661.23 is: 14,713.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.21 : 26,438.14 = 10,661.23 : x
  2. Step 2: Convert to fraction form
    19,157.21/26,438.14 = 10,661.23/x
  3. Step 3: Cross multiply
    19,157.21x = 26,438.14 × 10,661.23
  4. Step 4: Simplify right side
    19,157.21x = 281,862,905.82
  5. Step 5: Solve for x
    x = 281,862,905.82/19,157.21
  6. Step 6: Final answer
    x = 14,713.15

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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.