Home / 28,709.18-39,629.50-16,776.40

Finding the Fourth Proportional to 28,709.18, 39,629.50 and 16,776.40

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Solution

The fourth proportional to 28,709.18, 39,629.50 and 16,776.40 is: 23,157.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.18 : 39,629.50 = 16,776.40 : x
  2. Step 2: Convert to fraction form
    28,709.18/39,629.50 = 16,776.40/x
  3. Step 3: Cross multiply
    28,709.18x = 39,629.50 × 16,776.40
  4. Step 4: Simplify right side
    28,709.18x = 664,840,202.79
  5. Step 5: Solve for x
    x = 664,840,202.79/28,709.18
  6. Step 6: Final answer
    x = 23,157.75

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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.