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Finding the Fourth Proportional to 20,449.88, 30,674.76 and 9,353.60

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Solution

The fourth proportional to 20,449.88, 30,674.76 and 9,353.60 is: 14,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.88 : 30,674.76 = 9,353.60 : x
  2. Step 2: Convert to fraction form
    20,449.88/30,674.76 = 9,353.60/x
  3. Step 3: Cross multiply
    20,449.88x = 30,674.76 × 9,353.60
  4. Step 4: Simplify right side
    20,449.88x = 286,919,435.14
  5. Step 5: Solve for x
    x = 286,919,435.14/20,449.88
  6. Step 6: Final answer
    x = 14,030.37

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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.