Home / 12,857.18-19,287.18-4,090.04

Finding the Fourth Proportional to 12,857.18, 19,287.18 and 4,090.04

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Solution

The fourth proportional to 12,857.18, 19,287.18 and 4,090.04 is: 6,135.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.18 : 19,287.18 = 4,090.04 : x
  2. Step 2: Convert to fraction form
    12,857.18/19,287.18 = 4,090.04/x
  3. Step 3: Cross multiply
    12,857.18x = 19,287.18 × 4,090.04
  4. Step 4: Simplify right side
    12,857.18x = 78,885,313.58
  5. Step 5: Solve for x
    x = 78,885,313.58/12,857.18
  6. Step 6: Final answer
    x = 6,135.51

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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.