Home / 20,366.40-28,105.92-12,408.96

Finding the Fourth Proportional to 20,366.40, 28,105.92 and 12,408.96

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Solution

The fourth proportional to 20,366.40, 28,105.92 and 12,408.96 is: 17,124.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.40 : 28,105.92 = 12,408.96 : x
  2. Step 2: Convert to fraction form
    20,366.40/28,105.92 = 12,408.96/x
  3. Step 3: Cross multiply
    20,366.40x = 28,105.92 × 12,408.96
  4. Step 4: Simplify right side
    20,366.40x = 348,765,237.04
  5. Step 5: Solve for x
    x = 348,765,237.04/20,366.40
  6. Step 6: Final answer
    x = 17,124.54

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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.