Home / 20,639.60-30,958.56-9,542.64

Finding the Fourth Proportional to 20,639.60, 30,958.56 and 9,542.64

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Solution

The fourth proportional to 20,639.60, 30,958.56 and 9,542.64 is: 14,313.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.60 : 30,958.56 = 9,542.64 : x
  2. Step 2: Convert to fraction form
    20,639.60/30,958.56 = 9,542.64/x
  3. Step 3: Cross multiply
    20,639.60x = 30,958.56 × 9,542.64
  4. Step 4: Simplify right side
    20,639.60x = 295,426,393.00
  5. Step 5: Solve for x
    x = 295,426,393.00/20,639.60
  6. Step 6: Final answer
    x = 14,313.57

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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.