Home / 20,282.90-30,435.81-10,922.72

Finding the Fourth Proportional to 20,282.90, 30,435.81 and 10,922.72

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Solution

The fourth proportional to 20,282.90, 30,435.81 and 10,922.72 is: 16,390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.90 : 30,435.81 = 10,922.72 : x
  2. Step 2: Convert to fraction form
    20,282.90/30,435.81 = 10,922.72/x
  3. Step 3: Cross multiply
    20,282.90x = 30,435.81 × 10,922.72
  4. Step 4: Simplify right side
    20,282.90x = 332,441,775.99
  5. Step 5: Solve for x
    x = 332,441,775.99/20,282.90
  6. Step 6: Final answer
    x = 16,390.25

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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.