Home / 21,770.75-30,046.47-12,819.08

Finding the Fourth Proportional to 21,770.75, 30,046.47 and 12,819.08

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Solution

The fourth proportional to 21,770.75, 30,046.47 and 12,819.08 is: 17,692.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.75 : 30,046.47 = 12,819.08 : x
  2. Step 2: Convert to fraction form
    21,770.75/30,046.47 = 12,819.08/x
  3. Step 3: Cross multiply
    21,770.75x = 30,046.47 × 12,819.08
  4. Step 4: Simplify right side
    21,770.75x = 385,168,102.65
  5. Step 5: Solve for x
    x = 385,168,102.65/21,770.75
  6. Step 6: Final answer
    x = 17,692.00

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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.