Home / 20,756.32-28,644.08-11,324.96

Finding the Fourth Proportional to 20,756.32, 28,644.08 and 11,324.96

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Solution

The fourth proportional to 20,756.32, 28,644.08 and 11,324.96 is: 15,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.32 : 28,644.08 = 11,324.96 : x
  2. Step 2: Convert to fraction form
    20,756.32/28,644.08 = 11,324.96/x
  3. Step 3: Cross multiply
    20,756.32x = 28,644.08 × 11,324.96
  4. Step 4: Simplify right side
    20,756.32x = 324,393,060.24
  5. Step 5: Solve for x
    x = 324,393,060.24/20,756.32
  6. Step 6: Final answer
    x = 15,628.64

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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.