Home / 28,861.28-39,827.76-16,287.20

Finding the Fourth Proportional to 28,861.28, 39,827.76 and 16,287.20

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Solution

The fourth proportional to 28,861.28, 39,827.76 and 16,287.20 is: 22,475.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.28 : 39,827.76 = 16,287.20 : x
  2. Step 2: Convert to fraction form
    28,861.28/39,827.76 = 16,287.20/x
  3. Step 3: Cross multiply
    28,861.28x = 39,827.76 × 16,287.20
  4. Step 4: Simplify right side
    28,861.28x = 648,682,692.67
  5. Step 5: Solve for x
    x = 648,682,692.67/28,861.28
  6. Step 6: Final answer
    x = 22,475.88

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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.