Home / 13,213.14-19,780.83-8,819.70

Finding the Fourth Proportional to 13,213.14, 19,780.83 and 8,819.70

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Solution

The fourth proportional to 13,213.14, 19,780.83 and 8,819.70 is: 13,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.14 : 19,780.83 = 8,819.70 : x
  2. Step 2: Convert to fraction form
    13,213.14/19,780.83 = 8,819.70/x
  3. Step 3: Cross multiply
    13,213.14x = 19,780.83 × 8,819.70
  4. Step 4: Simplify right side
    13,213.14x = 174,460,986.35
  5. Step 5: Solve for x
    x = 174,460,986.35/13,213.14
  6. Step 6: Final answer
    x = 13,203.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.