Home / 28,722.10-39,630.62-16,783.12

Finding the Fourth Proportional to 28,722.10, 39,630.62 and 16,783.12

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Solution

The fourth proportional to 28,722.10, 39,630.62 and 16,783.12 is: 23,157.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.10 : 39,630.62 = 16,783.12 : x
  2. Step 2: Convert to fraction form
    28,722.10/39,630.62 = 16,783.12/x
  3. Step 3: Cross multiply
    28,722.10x = 39,630.62 × 16,783.12
  4. Step 4: Simplify right side
    28,722.10x = 665,125,367.22
  5. Step 5: Solve for x
    x = 665,125,367.22/28,722.10
  6. Step 6: Final answer
    x = 23,157.27

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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.