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Finding the Fourth Proportional to 28,739.50, 39,660.52 and 16,164.52

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Solution

The fourth proportional to 28,739.50, 39,660.52 and 16,164.52 is: 22,307.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,739.50 : 39,660.52 = 16,164.52 : x
  2. Step 2: Convert to fraction form
    28,739.50/39,660.52 = 16,164.52/x
  3. Step 3: Cross multiply
    28,739.50x = 39,660.52 × 16,164.52
  4. Step 4: Simplify right side
    28,739.50x = 641,093,268.75
  5. Step 5: Solve for x
    x = 641,093,268.75/28,739.50
  6. Step 6: Final answer
    x = 22,307.04

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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.