Home / 20,673.28-28,527.44-12,175.72

Finding the Fourth Proportional to 20,673.28, 28,527.44 and 12,175.72

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Solution

The fourth proportional to 20,673.28, 28,527.44 and 12,175.72 is: 16,801.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.28 : 28,527.44 = 12,175.72 : x
  2. Step 2: Convert to fraction form
    20,673.28/28,527.44 = 12,175.72/x
  3. Step 3: Cross multiply
    20,673.28x = 28,527.44 × 12,175.72
  4. Step 4: Simplify right side
    20,673.28x = 347,342,121.76
  5. Step 5: Solve for x
    x = 347,342,121.76/20,673.28
  6. Step 6: Final answer
    x = 16,801.50

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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.