Home / 28,861.20-39,832.84-20,900.52

Finding the Fourth Proportional to 28,861.20, 39,832.84 and 20,900.52

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Solution

The fourth proportional to 28,861.20, 39,832.84 and 20,900.52 is: 28,845.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.20 : 39,832.84 = 20,900.52 : x
  2. Step 2: Convert to fraction form
    28,861.20/39,832.84 = 20,900.52/x
  3. Step 3: Cross multiply
    28,861.20x = 39,832.84 × 20,900.52
  4. Step 4: Simplify right side
    28,861.20x = 832,527,069.08
  5. Step 5: Solve for x
    x = 832,527,069.08/28,861.20
  6. Step 6: Final answer
    x = 28,845.89

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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.