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Finding the Fourth Proportional to 30,453.28, 45,659.28 and 10,729.28

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Solution

The fourth proportional to 30,453.28, 45,659.28 and 10,729.28 is: 16,086.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,453.28 : 45,659.28 = 10,729.28 : x
  2. Step 2: Convert to fraction form
    30,453.28/45,659.28 = 10,729.28/x
  3. Step 3: Cross multiply
    30,453.28x = 45,659.28 × 10,729.28
  4. Step 4: Simplify right side
    30,453.28x = 489,891,199.72
  5. Step 5: Solve for x
    x = 489,891,199.72/30,453.28
  6. Step 6: Final answer
    x = 16,086.65

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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.