Home / 28,728.10-39,644.67-16,789.06

Finding the Fourth Proportional to 28,728.10, 39,644.67 and 16,789.06

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Solution

The fourth proportional to 28,728.10, 39,644.67 and 16,789.06 is: 23,168.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.10 : 39,644.67 = 16,789.06 : x
  2. Step 2: Convert to fraction form
    28,728.10/39,644.67 = 16,789.06/x
  3. Step 3: Cross multiply
    28,728.10x = 39,644.67 × 16,789.06
  4. Step 4: Simplify right side
    28,728.10x = 665,596,743.31
  5. Step 5: Solve for x
    x = 665,596,743.31/28,728.10
  6. Step 6: Final answer
    x = 23,168.84

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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.