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Finding the Fourth Proportional to 12,018.13, 18,014.43 and 7,090.09

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Solution

The fourth proportional to 12,018.13, 18,014.43 and 7,090.09 is: 10,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.13 : 18,014.43 = 7,090.09 : x
  2. Step 2: Convert to fraction form
    12,018.13/18,014.43 = 7,090.09/x
  3. Step 3: Cross multiply
    12,018.13x = 18,014.43 × 7,090.09
  4. Step 4: Simplify right side
    12,018.13x = 127,723,930.00
  5. Step 5: Solve for x
    x = 127,723,930.00/12,018.13
  6. Step 6: Final answer
    x = 10,627.60

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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.