Home / 20,528.15-30,775.82-11,769.21

Finding the Fourth Proportional to 20,528.15, 30,775.82 and 11,769.21

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Solution

The fourth proportional to 20,528.15, 30,775.82 and 11,769.21 is: 17,644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.15 : 30,775.82 = 11,769.21 : x
  2. Step 2: Convert to fraction form
    20,528.15/30,775.82 = 11,769.21/x
  3. Step 3: Cross multiply
    20,528.15x = 30,775.82 × 11,769.21
  4. Step 4: Simplify right side
    20,528.15x = 362,207,029.66
  5. Step 5: Solve for x
    x = 362,207,029.66/20,528.15
  6. Step 6: Final answer
    x = 17,644.41

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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.