Home / 28,489.56-42,749.60-11,861.04

Finding the Fourth Proportional to 28,489.56, 42,749.60 and 11,861.04

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Solution

The fourth proportional to 28,489.56, 42,749.60 and 11,861.04 is: 17,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.56 : 42,749.60 = 11,861.04 : x
  2. Step 2: Convert to fraction form
    28,489.56/42,749.60 = 11,861.04/x
  3. Step 3: Cross multiply
    28,489.56x = 42,749.60 × 11,861.04
  4. Step 4: Simplify right side
    28,489.56x = 507,054,715.58
  5. Step 5: Solve for x
    x = 507,054,715.58/28,489.56
  6. Step 6: Final answer
    x = 17,797.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.