Home / 13,185.63-19,785.75-5,399.91

Finding the Fourth Proportional to 13,185.63, 19,785.75 and 5,399.91

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Solution

The fourth proportional to 13,185.63, 19,785.75 and 5,399.91 is: 8,102.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.63 : 19,785.75 = 5,399.91 : x
  2. Step 2: Convert to fraction form
    13,185.63/19,785.75 = 5,399.91/x
  3. Step 3: Cross multiply
    13,185.63x = 19,785.75 × 5,399.91
  4. Step 4: Simplify right side
    13,185.63x = 106,841,269.28
  5. Step 5: Solve for x
    x = 106,841,269.28/13,185.63
  6. Step 6: Final answer
    x = 8,102.86

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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.