Home / 38,400.27-52,990.62-21,406.37

Finding the Fourth Proportional to 38,400.27, 52,990.62 and 21,406.37

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Solution

The fourth proportional to 38,400.27, 52,990.62 and 21,406.37 is: 29,539.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,400.27 : 52,990.62 = 21,406.37 : x
  2. Step 2: Convert to fraction form
    38,400.27/52,990.62 = 21,406.37/x
  3. Step 3: Cross multiply
    38,400.27x = 52,990.62 × 21,406.37
  4. Step 4: Simplify right side
    38,400.27x = 1,134,336,818.25
  5. Step 5: Solve for x
    x = 1,134,336,818.25/38,400.27
  6. Step 6: Final answer
    x = 29,539.81

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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.