Home / 28,957.20-39,958.05-16,209.64

Finding the Fourth Proportional to 28,957.20, 39,958.05 and 16,209.64

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Solution

The fourth proportional to 28,957.20, 39,958.05 and 16,209.64 is: 22,367.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,957.20 : 39,958.05 = 16,209.64 : x
  2. Step 2: Convert to fraction form
    28,957.20/39,958.05 = 16,209.64/x
  3. Step 3: Cross multiply
    28,957.20x = 39,958.05 × 16,209.64
  4. Step 4: Simplify right side
    28,957.20x = 647,705,605.60
  5. Step 5: Solve for x
    x = 647,705,605.60/28,957.20
  6. Step 6: Final answer
    x = 22,367.69

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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.