Home / 10,121.31-13,966.38-5,644.64

Finding the Fourth Proportional to 10,121.31, 13,966.38 and 5,644.64

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Solution

The fourth proportional to 10,121.31, 13,966.38 and 5,644.64 is: 7,789.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.31 : 13,966.38 = 5,644.64 : x
  2. Step 2: Convert to fraction form
    10,121.31/13,966.38 = 5,644.64/x
  3. Step 3: Cross multiply
    10,121.31x = 13,966.38 × 5,644.64
  4. Step 4: Simplify right side
    10,121.31x = 78,835,222.12
  5. Step 5: Solve for x
    x = 78,835,222.12/10,121.31
  6. Step 6: Final answer
    x = 7,789.03

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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.