Home / 20,216.54-30,320.63-5,421.94

Finding the Fourth Proportional to 20,216.54, 30,320.63 and 5,421.94

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Solution

The fourth proportional to 20,216.54, 30,320.63 and 5,421.94 is: 8,131.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.54 : 30,320.63 = 5,421.94 : x
  2. Step 2: Convert to fraction form
    20,216.54/30,320.63 = 5,421.94/x
  3. Step 3: Cross multiply
    20,216.54x = 30,320.63 × 5,421.94
  4. Step 4: Simplify right side
    20,216.54x = 164,396,554.04
  5. Step 5: Solve for x
    x = 164,396,554.04/20,216.54
  6. Step 6: Final answer
    x = 8,131.79

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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.