Home / 12,018.85-18,028.28-3,134.17

Finding the Fourth Proportional to 12,018.85, 18,028.28 and 3,134.17

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Solution

The fourth proportional to 12,018.85, 18,028.28 and 3,134.17 is: 4,701.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.85 : 18,028.28 = 3,134.17 : x
  2. Step 2: Convert to fraction form
    12,018.85/18,028.28 = 3,134.17/x
  3. Step 3: Cross multiply
    12,018.85x = 18,028.28 × 3,134.17
  4. Step 4: Simplify right side
    12,018.85x = 56,503,649.26
  5. Step 5: Solve for x
    x = 56,503,649.26/12,018.85
  6. Step 6: Final answer
    x = 4,701.25

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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.