Home / 20,309.60-30,464.40-7,163.30

Finding the Fourth Proportional to 20,309.60, 30,464.40 and 7,163.30

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Solution

The fourth proportional to 20,309.60, 30,464.40 and 7,163.30 is: 10,744.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.60 : 30,464.40 = 7,163.30 : x
  2. Step 2: Convert to fraction form
    20,309.60/30,464.40 = 7,163.30/x
  3. Step 3: Cross multiply
    20,309.60x = 30,464.40 × 7,163.30
  4. Step 4: Simplify right side
    20,309.60x = 218,225,636.52
  5. Step 5: Solve for x
    x = 218,225,636.52/20,309.60
  6. Step 6: Final answer
    x = 10,744.95

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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.