Home / 20,515.28-30,775.34-7,364.12

Finding the Fourth Proportional to 20,515.28, 30,775.34 and 7,364.12

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Solution

The fourth proportional to 20,515.28, 30,775.34 and 7,364.12 is: 11,047.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.28 : 30,775.34 = 7,364.12 : x
  2. Step 2: Convert to fraction form
    20,515.28/30,775.34 = 7,364.12/x
  3. Step 3: Cross multiply
    20,515.28x = 30,775.34 × 7,364.12
  4. Step 4: Simplify right side
    20,515.28x = 226,633,161.33
  5. Step 5: Solve for x
    x = 226,633,161.33/20,515.28
  6. Step 6: Final answer
    x = 11,047.04

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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.