Home / 39,391.85-54,360.74-21,486.94

Finding the Fourth Proportional to 39,391.85, 54,360.74 and 21,486.94

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Solution

The fourth proportional to 39,391.85, 54,360.74 and 21,486.94 is: 29,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,391.85 : 54,360.74 = 21,486.94 : x
  2. Step 2: Convert to fraction form
    39,391.85/54,360.74 = 21,486.94/x
  3. Step 3: Cross multiply
    39,391.85x = 54,360.74 × 21,486.94
  4. Step 4: Simplify right side
    39,391.85x = 1,168,045,876.55
  5. Step 5: Solve for x
    x = 1,168,045,876.55/39,391.85
  6. Step 6: Final answer
    x = 29,651.97

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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.