Home / 20,638.38-30,953.44-10,103.86

Finding the Fourth Proportional to 20,638.38, 30,953.44 and 10,103.86

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Solution

The fourth proportional to 20,638.38, 30,953.44 and 10,103.86 is: 15,153.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.38 : 30,953.44 = 10,103.86 : x
  2. Step 2: Convert to fraction form
    20,638.38/30,953.44 = 10,103.86/x
  3. Step 3: Cross multiply
    20,638.38x = 30,953.44 × 10,103.86
  4. Step 4: Simplify right side
    20,638.38x = 312,749,224.28
  5. Step 5: Solve for x
    x = 312,749,224.28/20,638.38
  6. Step 6: Final answer
    x = 15,153.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.