Home / 20,864.02-28,794.72-11,912.80

Finding the Fourth Proportional to 20,864.02, 28,794.72 and 11,912.80

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Solution

The fourth proportional to 20,864.02, 28,794.72 and 11,912.80 is: 16,441.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.02 : 28,794.72 = 11,912.80 : x
  2. Step 2: Convert to fraction form
    20,864.02/28,794.72 = 11,912.80/x
  3. Step 3: Cross multiply
    20,864.02x = 28,794.72 × 11,912.80
  4. Step 4: Simplify right side
    20,864.02x = 343,025,740.42
  5. Step 5: Solve for x
    x = 343,025,740.42/20,864.02
  6. Step 6: Final answer
    x = 16,441.02

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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.