Home / 12,408.96-17,143.20-9,259.68

Finding the Fourth Proportional to 12,408.96, 17,143.20 and 9,259.68

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Solution

The fourth proportional to 12,408.96, 17,143.20 and 9,259.68 is: 12,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.96 : 17,143.20 = 9,259.68 : x
  2. Step 2: Convert to fraction form
    12,408.96/17,143.20 = 9,259.68/x
  3. Step 3: Cross multiply
    12,408.96x = 17,143.20 × 9,259.68
  4. Step 4: Simplify right side
    12,408.96x = 158,740,546.18
  5. Step 5: Solve for x
    x = 158,740,546.18/12,408.96
  6. Step 6: Final answer
    x = 12,792.41

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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.