Home / 20,225.81-30,352.39-7,078.30

Finding the Fourth Proportional to 20,225.81, 30,352.39 and 7,078.30

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Solution

The fourth proportional to 20,225.81, 30,352.39 and 7,078.30 is: 10,622.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.81 : 30,352.39 = 7,078.30 : x
  2. Step 2: Convert to fraction form
    20,225.81/30,352.39 = 7,078.30/x
  3. Step 3: Cross multiply
    20,225.81x = 30,352.39 × 7,078.30
  4. Step 4: Simplify right side
    20,225.81x = 214,843,322.14
  5. Step 5: Solve for x
    x = 214,843,322.14/20,225.81
  6. Step 6: Final answer
    x = 10,622.24

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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.