Home / 20,321.12-30,460.08-8,628.32

Finding the Fourth Proportional to 20,321.12, 30,460.08 and 8,628.32

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Solution

The fourth proportional to 20,321.12, 30,460.08 and 8,628.32 is: 12,933.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.12 : 30,460.08 = 8,628.32 : x
  2. Step 2: Convert to fraction form
    20,321.12/30,460.08 = 8,628.32/x
  3. Step 3: Cross multiply
    20,321.12x = 30,460.08 × 8,628.32
  4. Step 4: Simplify right side
    20,321.12x = 262,819,317.47
  5. Step 5: Solve for x
    x = 262,819,317.47/20,321.12
  6. Step 6: Final answer
    x = 12,933.31

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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.