Home / 10,120.56-13,966.30-5,644.36

Finding the Fourth Proportional to 10,120.56, 13,966.30 and 5,644.36

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Solution

The fourth proportional to 10,120.56, 13,966.30 and 5,644.36 is: 7,789.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.56 : 13,966.30 = 5,644.36 : x
  2. Step 2: Convert to fraction form
    10,120.56/13,966.30 = 5,644.36/x
  3. Step 3: Cross multiply
    10,120.56x = 13,966.30 × 5,644.36
  4. Step 4: Simplify right side
    10,120.56x = 78,830,825.07
  5. Step 5: Solve for x
    x = 78,830,825.07/10,120.56
  6. Step 6: Final answer
    x = 7,789.18

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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.