Home / 38,512.92-53,142.60-21,515.07

Finding the Fourth Proportional to 38,512.92, 53,142.60 and 21,515.07

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Solution

The fourth proportional to 38,512.92, 53,142.60 and 21,515.07 is: 29,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.92 : 53,142.60 = 21,515.07 : x
  2. Step 2: Convert to fraction form
    38,512.92/53,142.60 = 21,515.07/x
  3. Step 3: Cross multiply
    38,512.92x = 53,142.60 × 21,515.07
  4. Step 4: Simplify right side
    38,512.92x = 1,143,366,758.98
  5. Step 5: Solve for x
    x = 1,143,366,758.98/38,512.92
  6. Step 6: Final answer
    x = 29,687.88

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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.