Home / 21,795.70-30,080.10-12,845.98

Finding the Fourth Proportional to 21,795.70, 30,080.10 and 12,845.98

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Solution

The fourth proportional to 21,795.70, 30,080.10 and 12,845.98 is: 17,728.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795.70 : 30,080.10 = 12,845.98 : x
  2. Step 2: Convert to fraction form
    21,795.70/30,080.10 = 12,845.98/x
  3. Step 3: Cross multiply
    21,795.70x = 30,080.10 × 12,845.98
  4. Step 4: Simplify right side
    21,795.70x = 386,408,363.00
  5. Step 5: Solve for x
    x = 386,408,363.00/21,795.70
  6. Step 6: Final answer
    x = 17,728.65

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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.