Home / 10,120.80-13,966.64-5,644.60

Finding the Fourth Proportional to 10,120.80, 13,966.64 and 5,644.60

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Solution

The fourth proportional to 10,120.80, 13,966.64 and 5,644.60 is: 7,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.80 : 13,966.64 = 5,644.60 : x
  2. Step 2: Convert to fraction form
    10,120.80/13,966.64 = 5,644.60/x
  3. Step 3: Cross multiply
    10,120.80x = 13,966.64 × 5,644.60
  4. Step 4: Simplify right side
    10,120.80x = 78,836,096.14
  5. Step 5: Solve for x
    x = 78,836,096.14/10,120.80
  6. Step 6: Final answer
    x = 7,789.51

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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.