Home / 12,857.55-19,287.75-4,090.41

Finding the Fourth Proportional to 12,857.55, 19,287.75 and 4,090.41

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Solution

The fourth proportional to 12,857.55, 19,287.75 and 4,090.41 is: 6,136.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.55 : 19,287.75 = 4,090.41 : x
  2. Step 2: Convert to fraction form
    12,857.55/19,287.75 = 4,090.41/x
  3. Step 3: Cross multiply
    12,857.55x = 19,287.75 × 4,090.41
  4. Step 4: Simplify right side
    12,857.55x = 78,894,805.48
  5. Step 5: Solve for x
    x = 78,894,805.48/12,857.55
  6. Step 6: Final answer
    x = 6,136.07

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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.