Home / 38,399.70-52,991.82-21,405.02

Finding the Fourth Proportional to 38,399.70, 52,991.82 and 21,405.02

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Solution

The fourth proportional to 38,399.70, 52,991.82 and 21,405.02 is: 29,539.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,399.70 : 52,991.82 = 21,405.02 : x
  2. Step 2: Convert to fraction form
    38,399.70/52,991.82 = 21,405.02/x
  3. Step 3: Cross multiply
    38,399.70x = 52,991.82 × 21,405.02
  4. Step 4: Simplify right side
    38,399.70x = 1,134,291,179.68
  5. Step 5: Solve for x
    x = 1,134,291,179.68/38,399.70
  6. Step 6: Final answer
    x = 29,539.06

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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.