Home / 10,120.06-13,965.80-5,644.20

Finding the Fourth Proportional to 10,120.06, 13,965.80 and 5,644.20

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Solution

The fourth proportional to 10,120.06, 13,965.80 and 5,644.20 is: 7,789.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.06 : 13,965.80 = 5,644.20 : x
  2. Step 2: Convert to fraction form
    10,120.06/13,965.80 = 5,644.20/x
  3. Step 3: Cross multiply
    10,120.06x = 13,965.80 × 5,644.20
  4. Step 4: Simplify right side
    10,120.06x = 78,825,768.36
  5. Step 5: Solve for x
    x = 78,825,768.36/10,120.06
  6. Step 6: Final answer
    x = 7,789.06

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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.