Home / 20,314.28-30,453.12-7,164.32

Finding the Fourth Proportional to 20,314.28, 30,453.12 and 7,164.32

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Solution

The fourth proportional to 20,314.28, 30,453.12 and 7,164.32 is: 10,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.28 : 30,453.12 = 7,164.32 : x
  2. Step 2: Convert to fraction form
    20,314.28/30,453.12 = 7,164.32/x
  3. Step 3: Cross multiply
    20,314.28x = 30,453.12 × 7,164.32
  4. Step 4: Simplify right side
    20,314.28x = 218,175,896.68
  5. Step 5: Solve for x
    x = 218,175,896.68/20,314.28
  6. Step 6: Final answer
    x = 10,740.03

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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.