Home / 19,518-26,936.96-12,809.04

Finding the Fourth Proportional to 19,518, 26,936.96 and 12,809.04

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Solution

The fourth proportional to 19,518, 26,936.96 and 12,809.04 is: 17,677.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518 : 26,936.96 = 12,809.04 : x
  2. Step 2: Convert to fraction form
    19,518/26,936.96 = 12,809.04/x
  3. Step 3: Cross multiply
    19,518x = 26,936.96 × 12,809.04
  4. Step 4: Simplify right side
    19,518x = 345,036,598.12
  5. Step 5: Solve for x
    x = 345,036,598.12/19,518
  6. Step 6: Final answer
    x = 17,677.87

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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.