Home / 13,828.24-20,728.86-5,505.76

Finding the Fourth Proportional to 13,828.24, 20,728.86 and 5,505.76

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Solution

The fourth proportional to 13,828.24, 20,728.86 and 5,505.76 is: 8,253.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.24 : 20,728.86 = 5,505.76 : x
  2. Step 2: Convert to fraction form
    13,828.24/20,728.86 = 5,505.76/x
  3. Step 3: Cross multiply
    13,828.24x = 20,728.86 × 5,505.76
  4. Step 4: Simplify right side
    13,828.24x = 114,128,128.23
  5. Step 5: Solve for x
    x = 114,128,128.23/13,828.24
  6. Step 6: Final answer
    x = 8,253.26

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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.