Home / 18,699.12-25,839-17,787.96

Finding the Fourth Proportional to 18,699.12, 25,839 and 17,787.96

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Solution

The fourth proportional to 18,699.12, 25,839 and 17,787.96 is: 24,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.12 : 25,839 = 17,787.96 : x
  2. Step 2: Convert to fraction form
    18,699.12/25,839 = 17,787.96/x
  3. Step 3: Cross multiply
    18,699.12x = 25,839 × 17,787.96
  4. Step 4: Simplify right side
    18,699.12x = 459,623,098.44
  5. Step 5: Solve for x
    x = 459,623,098.44/18,699.12
  6. Step 6: Final answer
    x = 24,579.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.