Home / 13,243.78-19,860.60-3,881.80

Finding the Fourth Proportional to 13,243.78, 19,860.60 and 3,881.80

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Solution

The fourth proportional to 13,243.78, 19,860.60 and 3,881.80 is: 5,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.78 : 19,860.60 = 3,881.80 : x
  2. Step 2: Convert to fraction form
    13,243.78/19,860.60 = 3,881.80/x
  3. Step 3: Cross multiply
    13,243.78x = 19,860.60 × 3,881.80
  4. Step 4: Simplify right side
    13,243.78x = 77,094,777.78
  5. Step 5: Solve for x
    x = 77,094,777.78/13,243.78
  6. Step 6: Final answer
    x = 5,821.21

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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.