Home / 39,804.72-54,933.84-21,903.12

Finding the Fourth Proportional to 39,804.72, 54,933.84 and 21,903.12

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Solution

The fourth proportional to 39,804.72, 54,933.84 and 21,903.12 is: 30,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.72 : 54,933.84 = 21,903.12 : x
  2. Step 2: Convert to fraction form
    39,804.72/54,933.84 = 21,903.12/x
  3. Step 3: Cross multiply
    39,804.72x = 54,933.84 × 21,903.12
  4. Step 4: Simplify right side
    39,804.72x = 1,203,222,489.58
  5. Step 5: Solve for x
    x = 1,203,222,489.58/39,804.72
  6. Step 6: Final answer
    x = 30,228.14

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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.