Home / 39,143.22-54,017.58-21,238.23

Finding the Fourth Proportional to 39,143.22, 54,017.58 and 21,238.23

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Solution

The fourth proportional to 39,143.22, 54,017.58 and 21,238.23 is: 29,308.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.22 : 54,017.58 = 21,238.23 : x
  2. Step 2: Convert to fraction form
    39,143.22/54,017.58 = 21,238.23/x
  3. Step 3: Cross multiply
    39,143.22x = 54,017.58 × 21,238.23
  4. Step 4: Simplify right side
    39,143.22x = 1,147,237,435.32
  5. Step 5: Solve for x
    x = 1,147,237,435.32/39,143.22
  6. Step 6: Final answer
    x = 29,308.71

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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.