Home / 39,187.08-54,078.16-21,282.09

Finding the Fourth Proportional to 39,187.08, 54,078.16 and 21,282.09

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Solution

The fourth proportional to 39,187.08, 54,078.16 and 21,282.09 is: 29,369.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,187.08 : 54,078.16 = 21,282.09 : x
  2. Step 2: Convert to fraction form
    39,187.08/54,078.16 = 21,282.09/x
  3. Step 3: Cross multiply
    39,187.08x = 54,078.16 × 21,282.09
  4. Step 4: Simplify right side
    39,187.08x = 1,150,896,268.15
  5. Step 5: Solve for x
    x = 1,150,896,268.15/39,187.08
  6. Step 6: Final answer
    x = 29,369.28

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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.