Home / 28,489.54-42,749.61-11,861.05

Finding the Fourth Proportional to 28,489.54, 42,749.61 and 11,861.05

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Solution

The fourth proportional to 28,489.54, 42,749.61 and 11,861.05 is: 17,797.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.54 : 42,749.61 = 11,861.05 : x
  2. Step 2: Convert to fraction form
    28,489.54/42,749.61 = 11,861.05/x
  3. Step 3: Cross multiply
    28,489.54x = 42,749.61 × 11,861.05
  4. Step 4: Simplify right side
    28,489.54x = 507,055,261.69
  5. Step 5: Solve for x
    x = 507,055,261.69/28,489.54
  6. Step 6: Final answer
    x = 17,797.94

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1.5x scale

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.