Home / 20,563.99-30,858.32-8,877.20

Finding the Fourth Proportional to 20,563.99, 30,858.32 and 8,877.20

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Solution

The fourth proportional to 20,563.99, 30,858.32 and 8,877.20 is: 13,321.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.99 : 30,858.32 = 8,877.20 : x
  2. Step 2: Convert to fraction form
    20,563.99/30,858.32 = 8,877.20/x
  3. Step 3: Cross multiply
    20,563.99x = 30,858.32 × 8,877.20
  4. Step 4: Simplify right side
    20,563.99x = 273,935,346.21
  5. Step 5: Solve for x
    x = 273,935,346.21/20,563.99
  6. Step 6: Final answer
    x = 13,321.12

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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.