Home / 20,550.45-28,360.44-12,051.40

Finding the Fourth Proportional to 20,550.45, 28,360.44 and 12,051.40

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Solution

The fourth proportional to 20,550.45, 28,360.44 and 12,051.40 is: 16,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.45 : 28,360.44 = 12,051.40 : x
  2. Step 2: Convert to fraction form
    20,550.45/28,360.44 = 12,051.40/x
  3. Step 3: Cross multiply
    20,550.45x = 28,360.44 × 12,051.40
  4. Step 4: Simplify right side
    20,550.45x = 341,782,809.93
  5. Step 5: Solve for x
    x = 341,782,809.93/20,550.45
  6. Step 6: Final answer
    x = 16,631.40

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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.