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Finding the Fourth Proportional to 35,453.99, 48,928.81 and 20,351.54

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Solution

The fourth proportional to 35,453.99, 48,928.81 and 20,351.54 is: 28,086.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,453.99 : 48,928.81 = 20,351.54 : x
  2. Step 2: Convert to fraction form
    35,453.99/48,928.81 = 20,351.54/x
  3. Step 3: Cross multiply
    35,453.99x = 48,928.81 × 20,351.54
  4. Step 4: Simplify right side
    35,453.99x = 995,776,562.42
  5. Step 5: Solve for x
    x = 995,776,562.42/35,453.99
  6. Step 6: Final answer
    x = 28,086.45

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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.