Home / 28,399.40-39,191.21-16,469.67

Finding the Fourth Proportional to 28,399.40, 39,191.21 and 16,469.67

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Solution

The fourth proportional to 28,399.40, 39,191.21 and 16,469.67 is: 22,728.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.40 : 39,191.21 = 16,469.67 : x
  2. Step 2: Convert to fraction form
    28,399.40/39,191.21 = 16,469.67/x
  3. Step 3: Cross multiply
    28,399.40x = 39,191.21 × 16,469.67
  4. Step 4: Simplify right side
    28,399.40x = 645,466,213.25
  5. Step 5: Solve for x
    x = 645,466,213.25/28,399.40
  6. Step 6: Final answer
    x = 22,728.17

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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.