Home / 20,433.16-28,198.97-15,388.48

Finding the Fourth Proportional to 20,433.16, 28,198.97 and 15,388.48

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Solution

The fourth proportional to 20,433.16, 28,198.97 and 15,388.48 is: 21,237.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.16 : 28,198.97 = 15,388.48 : x
  2. Step 2: Convert to fraction form
    20,433.16/28,198.97 = 15,388.48/x
  3. Step 3: Cross multiply
    20,433.16x = 28,198.97 × 15,388.48
  4. Step 4: Simplify right side
    20,433.16x = 433,939,285.87
  5. Step 5: Solve for x
    x = 433,939,285.87/20,433.16
  6. Step 6: Final answer
    x = 21,237.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.