Home / 20,322.90-30,496.50-7,186.32

Finding the Fourth Proportional to 20,322.90, 30,496.50 and 7,186.32

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Solution

The fourth proportional to 20,322.90, 30,496.50 and 7,186.32 is: 10,783.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.90 : 30,496.50 = 7,186.32 : x
  2. Step 2: Convert to fraction form
    20,322.90/30,496.50 = 7,186.32/x
  3. Step 3: Cross multiply
    20,322.90x = 30,496.50 × 7,186.32
  4. Step 4: Simplify right side
    20,322.90x = 219,157,607.88
  5. Step 5: Solve for x
    x = 219,157,607.88/20,322.90
  6. Step 6: Final answer
    x = 10,783.78

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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.