Home / 13,939.14-19,231.33-7,966.58

Finding the Fourth Proportional to 13,939.14, 19,231.33 and 7,966.58

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Solution

The fourth proportional to 13,939.14, 19,231.33 and 7,966.58 is: 10,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.14 : 19,231.33 = 7,966.58 : x
  2. Step 2: Convert to fraction form
    13,939.14/19,231.33 = 7,966.58/x
  3. Step 3: Cross multiply
    13,939.14x = 19,231.33 × 7,966.58
  4. Step 4: Simplify right side
    13,939.14x = 153,207,889.12
  5. Step 5: Solve for x
    x = 153,207,889.12/13,939.14
  6. Step 6: Final answer
    x = 10,991.20

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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.