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Finding the Fourth Proportional to 21,335.56, 29,443.08 and 11,903.92

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Solution

The fourth proportional to 21,335.56, 29,443.08 and 11,903.92 is: 16,427.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.56 : 29,443.08 = 11,903.92 : x
  2. Step 2: Convert to fraction form
    21,335.56/29,443.08 = 11,903.92/x
  3. Step 3: Cross multiply
    21,335.56x = 29,443.08 × 11,903.92
  4. Step 4: Simplify right side
    21,335.56x = 350,488,068.87
  5. Step 5: Solve for x
    x = 350,488,068.87/21,335.56
  6. Step 6: Final answer
    x = 16,427.41

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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.