Home / 20,388.66-30,595.32-7,240.03

Finding the Fourth Proportional to 20,388.66, 30,595.32 and 7,240.03

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Solution

The fourth proportional to 20,388.66, 30,595.32 and 7,240.03 is: 10,864.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.66 : 30,595.32 = 7,240.03 : x
  2. Step 2: Convert to fraction form
    20,388.66/30,595.32 = 7,240.03/x
  3. Step 3: Cross multiply
    20,388.66x = 30,595.32 × 7,240.03
  4. Step 4: Simplify right side
    20,388.66x = 221,511,130.27
  5. Step 5: Solve for x
    x = 221,511,130.27/20,388.66
  6. Step 6: Final answer
    x = 10,864.43

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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.