Home / 12,945.71-17,865.73-7,282.24

Finding the Fourth Proportional to 12,945.71, 17,865.73 and 7,282.24

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Solution

The fourth proportional to 12,945.71, 17,865.73 and 7,282.24 is: 10,049.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.71 : 17,865.73 = 7,282.24 : x
  2. Step 2: Convert to fraction form
    12,945.71/17,865.73 = 7,282.24/x
  3. Step 3: Cross multiply
    12,945.71x = 17,865.73 × 7,282.24
  4. Step 4: Simplify right side
    12,945.71x = 130,102,533.64
  5. Step 5: Solve for x
    x = 130,102,533.64/12,945.71
  6. Step 6: Final answer
    x = 10,049.86

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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.