Home / 13,939.01-19,231.16-7,966.46

Finding the Fourth Proportional to 13,939.01, 19,231.16 and 7,966.46

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Solution

The fourth proportional to 13,939.01, 19,231.16 and 7,966.46 is: 10,991.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.01 : 19,231.16 = 7,966.46 : x
  2. Step 2: Convert to fraction form
    13,939.01/19,231.16 = 7,966.46/x
  3. Step 3: Cross multiply
    13,939.01x = 19,231.16 × 7,966.46
  4. Step 4: Simplify right side
    13,939.01x = 153,204,130.91
  5. Step 5: Solve for x
    x = 153,204,130.91/13,939.01
  6. Step 6: Final answer
    x = 10,991.03

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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.