Home / 10,128.80-13,971.54-6,725.96

Finding the Fourth Proportional to 10,128.80, 13,971.54 and 6,725.96

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Solution

The fourth proportional to 10,128.80, 13,971.54 and 6,725.96 is: 9,277.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.80 : 13,971.54 = 6,725.96 : x
  2. Step 2: Convert to fraction form
    10,128.80/13,971.54 = 6,725.96/x
  3. Step 3: Cross multiply
    10,128.80x = 13,971.54 × 6,725.96
  4. Step 4: Simplify right side
    10,128.80x = 93,972,028.40
  5. Step 5: Solve for x
    x = 93,972,028.40/10,128.80
  6. Step 6: Final answer
    x = 9,277.71

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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.