Home / 18,408.36-25,395.96-12,822.60

Finding the Fourth Proportional to 18,408.36, 25,395.96 and 12,822.60

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Solution

The fourth proportional to 18,408.36, 25,395.96 and 12,822.60 is: 17,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.36 : 25,395.96 = 12,822.60 : x
  2. Step 2: Convert to fraction form
    18,408.36/25,395.96 = 12,822.60/x
  3. Step 3: Cross multiply
    18,408.36x = 25,395.96 × 12,822.60
  4. Step 4: Simplify right side
    18,408.36x = 325,642,236.70
  5. Step 5: Solve for x
    x = 325,642,236.70/18,408.36
  6. Step 6: Final answer
    x = 17,689.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.