Home / 20,550.40-28,356.32-12,051.84

Finding the Fourth Proportional to 20,550.40, 28,356.32 and 12,051.84

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Solution

The fourth proportional to 20,550.40, 28,356.32 and 12,051.84 is: 16,629.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.40 : 28,356.32 = 12,051.84 : x
  2. Step 2: Convert to fraction form
    20,550.40/28,356.32 = 12,051.84/x
  3. Step 3: Cross multiply
    20,550.40x = 28,356.32 × 12,051.84
  4. Step 4: Simplify right side
    20,550.40x = 341,745,831.63
  5. Step 5: Solve for x
    x = 341,745,831.63/20,550.40
  6. Step 6: Final answer
    x = 16,629.64

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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.