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Finding the Fourth Proportional to 35,662.80, 49,219.92 and 20,557.68

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Solution

The fourth proportional to 35,662.80, 49,219.92 and 20,557.68 is: 28,372.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,662.80 : 49,219.92 = 20,557.68 : x
  2. Step 2: Convert to fraction form
    35,662.80/49,219.92 = 20,557.68/x
  3. Step 3: Cross multiply
    35,662.80x = 49,219.92 × 20,557.68
  4. Step 4: Simplify right side
    35,662.80x = 1,011,847,364.99
  5. Step 5: Solve for x
    x = 1,011,847,364.99/35,662.80
  6. Step 6: Final answer
    x = 28,372.63

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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.