Home / 15,809.96-21,819.04-8,736.50

Finding the Fourth Proportional to 15,809.96, 21,819.04 and 8,736.50

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Solution

The fourth proportional to 15,809.96, 21,819.04 and 8,736.50 is: 12,057.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.96 : 21,819.04 = 8,736.50 : x
  2. Step 2: Convert to fraction form
    15,809.96/21,819.04 = 8,736.50/x
  3. Step 3: Cross multiply
    15,809.96x = 21,819.04 × 8,736.50
  4. Step 4: Simplify right side
    15,809.96x = 190,622,042.96
  5. Step 5: Solve for x
    x = 190,622,042.96/15,809.96
  6. Step 6: Final answer
    x = 12,057.09

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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.