Home / 21,342.64-29,442.54-13,381.96

Finding the Fourth Proportional to 21,342.64, 29,442.54 and 13,381.96

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Solution

The fourth proportional to 21,342.64, 29,442.54 and 13,381.96 is: 18,460.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.64 : 29,442.54 = 13,381.96 : x
  2. Step 2: Convert to fraction form
    21,342.64/29,442.54 = 13,381.96/x
  3. Step 3: Cross multiply
    21,342.64x = 29,442.54 × 13,381.96
  4. Step 4: Simplify right side
    21,342.64x = 393,998,892.58
  5. Step 5: Solve for x
    x = 393,998,892.58/21,342.64
  6. Step 6: Final answer
    x = 18,460.64

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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.