Home / 20,601.60-28,429.83-11,648.86

Finding the Fourth Proportional to 20,601.60, 28,429.83 and 11,648.86

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Solution

The fourth proportional to 20,601.60, 28,429.83 and 11,648.86 is: 16,075.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.60 : 28,429.83 = 11,648.86 : x
  2. Step 2: Convert to fraction form
    20,601.60/28,429.83 = 11,648.86/x
  3. Step 3: Cross multiply
    20,601.60x = 28,429.83 × 11,648.86
  4. Step 4: Simplify right side
    20,601.60x = 331,175,109.49
  5. Step 5: Solve for x
    x = 331,175,109.49/20,601.60
  6. Step 6: Final answer
    x = 16,075.21

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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.