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Finding the Fourth Proportional to 28,889.95, 43,260.94 and 19,992.96

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Solution

The fourth proportional to 28,889.95, 43,260.94 and 19,992.96 is: 29,938.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,889.95 : 43,260.94 = 19,992.96 : x
  2. Step 2: Convert to fraction form
    28,889.95/43,260.94 = 19,992.96/x
  3. Step 3: Cross multiply
    28,889.95x = 43,260.94 × 19,992.96
  4. Step 4: Simplify right side
    28,889.95x = 864,914,179.02
  5. Step 5: Solve for x
    x = 864,914,179.02/28,889.95
  6. Step 6: Final answer
    x = 29,938.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.