Home / 38,511.40-53,143.83-21,512.27

Finding the Fourth Proportional to 38,511.40, 53,143.83 and 21,512.27

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Solution

The fourth proportional to 38,511.40, 53,143.83 and 21,512.27 is: 29,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.40 : 53,143.83 = 21,512.27 : x
  2. Step 2: Convert to fraction form
    38,511.40/53,143.83 = 21,512.27/x
  3. Step 3: Cross multiply
    38,511.40x = 53,143.83 × 21,512.27
  4. Step 4: Simplify right side
    38,511.40x = 1,143,244,419.79
  5. Step 5: Solve for x
    x = 1,143,244,419.79/38,511.40
  6. Step 6: Final answer
    x = 29,685.87

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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.