Home / 38,512.40-53,145.21-21,513.27

Finding the Fourth Proportional to 38,512.40, 53,145.21 and 21,513.27

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Solution

The fourth proportional to 38,512.40, 53,145.21 and 21,513.27 is: 29,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.40 : 53,145.21 = 21,513.27 : x
  2. Step 2: Convert to fraction form
    38,512.40/53,145.21 = 21,513.27/x
  3. Step 3: Cross multiply
    38,512.40x = 53,145.21 × 21,513.27
  4. Step 4: Simplify right side
    38,512.40x = 1,143,327,251.94
  5. Step 5: Solve for x
    x = 1,143,327,251.94/38,512.40
  6. Step 6: Final answer
    x = 29,687.25

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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.