Home / 20,963.58-28,928.45-12,009.03

Finding the Fourth Proportional to 20,963.58, 28,928.45 and 12,009.03

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Solution

The fourth proportional to 20,963.58, 28,928.45 and 12,009.03 is: 16,571.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.58 : 28,928.45 = 12,009.03 : x
  2. Step 2: Convert to fraction form
    20,963.58/28,928.45 = 12,009.03/x
  3. Step 3: Cross multiply
    20,963.58x = 28,928.45 × 12,009.03
  4. Step 4: Simplify right side
    20,963.58x = 347,402,563.86
  5. Step 5: Solve for x
    x = 347,402,563.86/20,963.58
  6. Step 6: Final answer
    x = 16,571.72

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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.