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Finding the Fourth Proportional to 18,821.44, 25,973.76 and 10,437.76

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Solution

The fourth proportional to 18,821.44, 25,973.76 and 10,437.76 is: 14,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.44 : 25,973.76 = 10,437.76 : x
  2. Step 2: Convert to fraction form
    18,821.44/25,973.76 = 10,437.76/x
  3. Step 3: Cross multiply
    18,821.44x = 25,973.76 × 10,437.76
  4. Step 4: Simplify right side
    18,821.44x = 271,107,873.18
  5. Step 5: Solve for x
    x = 271,107,873.18/18,821.44
  6. Step 6: Final answer
    x = 14,404.20

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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.