Home / 20,383.60-28,135.20-12,004.96

Finding the Fourth Proportional to 20,383.60, 28,135.20 and 12,004.96

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Solution

The fourth proportional to 20,383.60, 28,135.20 and 12,004.96 is: 16,570.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.60 : 28,135.20 = 12,004.96 : x
  2. Step 2: Convert to fraction form
    20,383.60/28,135.20 = 12,004.96/x
  3. Step 3: Cross multiply
    20,383.60x = 28,135.20 × 12,004.96
  4. Step 4: Simplify right side
    20,383.60x = 337,761,950.59
  5. Step 5: Solve for x
    x = 337,761,950.59/20,383.60
  6. Step 6: Final answer
    x = 16,570.28

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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.