Home / 13,105.25-19,640.36-4,777.44

Finding the Fourth Proportional to 13,105.25, 19,640.36 and 4,777.44

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Solution

The fourth proportional to 13,105.25, 19,640.36 and 4,777.44 is: 7,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.25 : 19,640.36 = 4,777.44 : x
  2. Step 2: Convert to fraction form
    13,105.25/19,640.36 = 4,777.44/x
  3. Step 3: Cross multiply
    13,105.25x = 19,640.36 × 4,777.44
  4. Step 4: Simplify right side
    13,105.25x = 93,830,617.59
  5. Step 5: Solve for x
    x = 93,830,617.59/13,105.25
  6. Step 6: Final answer
    x = 7,159.78

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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.