Home / 29,289.90-40,419.56-15,861.05

Finding the Fourth Proportional to 29,289.90, 40,419.56 and 15,861.05

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Solution

The fourth proportional to 29,289.90, 40,419.56 and 15,861.05 is: 21,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,289.90 : 40,419.56 = 15,861.05 : x
  2. Step 2: Convert to fraction form
    29,289.90/40,419.56 = 15,861.05/x
  3. Step 3: Cross multiply
    29,289.90x = 40,419.56 × 15,861.05
  4. Step 4: Simplify right side
    29,289.90x = 641,096,380.73
  5. Step 5: Solve for x
    x = 641,096,380.73/29,289.90
  6. Step 6: Final answer
    x = 21,887.97

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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.