Home / 13,935.96-20,887.46-6,128.44

Finding the Fourth Proportional to 13,935.96, 20,887.46 and 6,128.44

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Solution

The fourth proportional to 13,935.96, 20,887.46 and 6,128.44 is: 9,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.96 : 20,887.46 = 6,128.44 : x
  2. Step 2: Convert to fraction form
    13,935.96/20,887.46 = 6,128.44/x
  3. Step 3: Cross multiply
    13,935.96x = 20,887.46 × 6,128.44
  4. Step 4: Simplify right side
    13,935.96x = 128,007,545.36
  5. Step 5: Solve for x
    x = 128,007,545.36/13,935.96
  6. Step 6: Final answer
    x = 9,185.41

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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.