Home / 39,667.91-54,745.26-21,766.40

Finding the Fourth Proportional to 39,667.91, 54,745.26 and 21,766.40

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Solution

The fourth proportional to 39,667.91, 54,745.26 and 21,766.40 is: 30,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,667.91 : 54,745.26 = 21,766.40 : x
  2. Step 2: Convert to fraction form
    39,667.91/54,745.26 = 21,766.40/x
  3. Step 3: Cross multiply
    39,667.91x = 54,745.26 × 21,766.40
  4. Step 4: Simplify right side
    39,667.91x = 1,191,607,364.13
  5. Step 5: Solve for x
    x = 1,191,607,364.13/39,667.91
  6. Step 6: Final answer
    x = 30,039.58

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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.