Home / 13,930.15-19,218.92-7,957.59

Finding the Fourth Proportional to 13,930.15, 19,218.92 and 7,957.59

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Solution

The fourth proportional to 13,930.15, 19,218.92 and 7,957.59 is: 10,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.15 : 19,218.92 = 7,957.59 : x
  2. Step 2: Convert to fraction form
    13,930.15/19,218.92 = 7,957.59/x
  3. Step 3: Cross multiply
    13,930.15x = 19,218.92 × 7,957.59
  4. Step 4: Simplify right side
    13,930.15x = 152,936,189.51
  5. Step 5: Solve for x
    x = 152,936,189.51/13,930.15
  6. Step 6: Final answer
    x = 10,978.79

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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.