Home / 28,969.92-43,439.76-13,398.48

Finding the Fourth Proportional to 28,969.92, 43,439.76 and 13,398.48

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Solution

The fourth proportional to 28,969.92, 43,439.76 and 13,398.48 is: 20,090.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.92 : 43,439.76 = 13,398.48 : x
  2. Step 2: Convert to fraction form
    28,969.92/43,439.76 = 13,398.48/x
  3. Step 3: Cross multiply
    28,969.92x = 43,439.76 × 13,398.48
  4. Step 4: Simplify right side
    28,969.92x = 582,026,755.56
  5. Step 5: Solve for x
    x = 582,026,755.56/28,969.92
  6. Step 6: Final answer
    x = 20,090.73

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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.