Home / 12,408.30-17,123.10-6,742.80

Finding the Fourth Proportional to 12,408.30, 17,123.10 and 6,742.80

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Solution

The fourth proportional to 12,408.30, 17,123.10 and 6,742.80 is: 9,304.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.30 : 17,123.10 = 6,742.80 : x
  2. Step 2: Convert to fraction form
    12,408.30/17,123.10 = 6,742.80/x
  3. Step 3: Cross multiply
    12,408.30x = 17,123.10 × 6,742.80
  4. Step 4: Simplify right side
    12,408.30x = 115,457,638.68
  5. Step 5: Solve for x
    x = 115,457,638.68/12,408.30
  6. Step 6: Final answer
    x = 9,304.87

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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.