Home / 12,405.34-18,617.19-6,863.41

Finding the Fourth Proportional to 12,405.34, 18,617.19 and 6,863.41

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Solution

The fourth proportional to 12,405.34, 18,617.19 and 6,863.41 is: 10,300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.34 : 18,617.19 = 6,863.41 : x
  2. Step 2: Convert to fraction form
    12,405.34/18,617.19 = 6,863.41/x
  3. Step 3: Cross multiply
    12,405.34x = 18,617.19 × 6,863.41
  4. Step 4: Simplify right side
    12,405.34x = 127,777,408.02
  5. Step 5: Solve for x
    x = 127,777,408.02/12,405.34
  6. Step 6: Final answer
    x = 10,300.19

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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.