Home / 20,563.28-30,837.60-7,412.12

Finding the Fourth Proportional to 20,563.28, 30,837.60 and 7,412.12

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Solution

The fourth proportional to 20,563.28, 30,837.60 and 7,412.12 is: 11,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.28 : 30,837.60 = 7,412.12 : x
  2. Step 2: Convert to fraction form
    20,563.28/30,837.60 = 7,412.12/x
  3. Step 3: Cross multiply
    20,563.28x = 30,837.60 × 7,412.12
  4. Step 4: Simplify right side
    20,563.28x = 228,571,991.71
  5. Step 5: Solve for x
    x = 228,571,991.71/20,563.28
  6. Step 6: Final answer
    x = 11,115.54

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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.