Home / 39,418.96-54,396.24-21,513.52

Finding the Fourth Proportional to 39,418.96, 54,396.24 and 21,513.52

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Solution

The fourth proportional to 39,418.96, 54,396.24 and 21,513.52 is: 29,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,418.96 : 54,396.24 = 21,513.52 : x
  2. Step 2: Convert to fraction form
    39,418.96/54,396.24 = 21,513.52/x
  3. Step 3: Cross multiply
    39,418.96x = 54,396.24 × 21,513.52
  4. Step 4: Simplify right side
    39,418.96x = 1,170,254,597.16
  5. Step 5: Solve for x
    x = 1,170,254,597.16/39,418.96
  6. Step 6: Final answer
    x = 29,687.61

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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.