Home / 13,199.54-19,771.76-7,917.80

Finding the Fourth Proportional to 13,199.54, 19,771.76 and 7,917.80

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Solution

The fourth proportional to 13,199.54, 19,771.76 and 7,917.80 is: 11,860.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.54 : 19,771.76 = 7,917.80 : x
  2. Step 2: Convert to fraction form
    13,199.54/19,771.76 = 7,917.80/x
  3. Step 3: Cross multiply
    13,199.54x = 19,771.76 × 7,917.80
  4. Step 4: Simplify right side
    13,199.54x = 156,548,841.33
  5. Step 5: Solve for x
    x = 156,548,841.33/13,199.54
  6. Step 6: Final answer
    x = 11,860.17

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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.