Home / 14,122.82-19,489.34-7,749.28

Finding the Fourth Proportional to 14,122.82, 19,489.34 and 7,749.28

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Solution

The fourth proportional to 14,122.82, 19,489.34 and 7,749.28 is: 10,693.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.82 : 19,489.34 = 7,749.28 : x
  2. Step 2: Convert to fraction form
    14,122.82/19,489.34 = 7,749.28/x
  3. Step 3: Cross multiply
    14,122.82x = 19,489.34 × 7,749.28
  4. Step 4: Simplify right side
    14,122.82x = 151,028,352.68
  5. Step 5: Solve for x
    x = 151,028,352.68/14,122.82
  6. Step 6: Final answer
    x = 10,693.92

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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.