Home / 40,054.45-55,276.32-21,906.25

Finding the Fourth Proportional to 40,054.45, 55,276.32 and 21,906.25

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Solution

The fourth proportional to 40,054.45, 55,276.32 and 21,906.25 is: 30,231.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,054.45 : 55,276.32 = 21,906.25 : x
  2. Step 2: Convert to fraction form
    40,054.45/55,276.32 = 21,906.25/x
  3. Step 3: Cross multiply
    40,054.45x = 55,276.32 × 21,906.25
  4. Step 4: Simplify right side
    40,054.45x = 1,210,896,885
  5. Step 5: Solve for x
    x = 1,210,896,885/40,054.45
  6. Step 6: Final answer
    x = 30,231.27

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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.