Home / 12,778.48-19,127.22-9,256.60

Finding the Fourth Proportional to 12,778.48, 19,127.22 and 9,256.60

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Solution

The fourth proportional to 12,778.48, 19,127.22 and 9,256.60 is: 13,855.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.48 : 19,127.22 = 9,256.60 : x
  2. Step 2: Convert to fraction form
    12,778.48/19,127.22 = 9,256.60/x
  3. Step 3: Cross multiply
    12,778.48x = 19,127.22 × 9,256.60
  4. Step 4: Simplify right side
    12,778.48x = 177,053,024.65
  5. Step 5: Solve for x
    x = 177,053,024.65/12,778.48
  6. Step 6: Final answer
    x = 13,855.56

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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.