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Finding the Fourth Proportional to 35,645.76, 49,179.84 and 20,738.88

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Solution

The fourth proportional to 35,645.76, 49,179.84 and 20,738.88 is: 28,613.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,645.76 : 49,179.84 = 20,738.88 : x
  2. Step 2: Convert to fraction form
    35,645.76/49,179.84 = 20,738.88/x
  3. Step 3: Cross multiply
    35,645.76x = 49,179.84 × 20,738.88
  4. Step 4: Simplify right side
    35,645.76x = 1,019,934,800.18
  5. Step 5: Solve for x
    x = 1,019,934,800.18/35,645.76
  6. Step 6: Final answer
    x = 28,613.07

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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.