Home / 12,018.78-18,028.19-3,134.10

Finding the Fourth Proportional to 12,018.78, 18,028.19 and 3,134.10

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Solution

The fourth proportional to 12,018.78, 18,028.19 and 3,134.10 is: 4,701.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.78 : 18,028.19 = 3,134.10 : x
  2. Step 2: Convert to fraction form
    12,018.78/18,028.19 = 3,134.10/x
  3. Step 3: Cross multiply
    12,018.78x = 18,028.19 × 3,134.10
  4. Step 4: Simplify right side
    12,018.78x = 56,502,218.01
  5. Step 5: Solve for x
    x = 56,502,218.01/12,018.78
  6. Step 6: Final answer
    x = 4,701.16

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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.