Home / 20,068.08-30,090.24-8,218.32

Finding the Fourth Proportional to 20,068.08, 30,090.24 and 8,218.32

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Solution

The fourth proportional to 20,068.08, 30,090.24 and 8,218.32 is: 12,322.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.08 : 30,090.24 = 8,218.32 : x
  2. Step 2: Convert to fraction form
    20,068.08/30,090.24 = 8,218.32/x
  3. Step 3: Cross multiply
    20,068.08x = 30,090.24 × 8,218.32
  4. Step 4: Simplify right side
    20,068.08x = 247,291,221.20
  5. Step 5: Solve for x
    x = 247,291,221.20/20,068.08
  6. Step 6: Final answer
    x = 12,322.61

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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.