Home / 15,282.24-21,066.96-11,921.28

Finding the Fourth Proportional to 15,282.24, 21,066.96 and 11,921.28

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Solution

The fourth proportional to 15,282.24, 21,066.96 and 11,921.28 is: 16,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.24 : 21,066.96 = 11,921.28 : x
  2. Step 2: Convert to fraction form
    15,282.24/21,066.96 = 11,921.28/x
  3. Step 3: Cross multiply
    15,282.24x = 21,066.96 × 11,921.28
  4. Step 4: Simplify right side
    15,282.24x = 251,145,128.91
  5. Step 5: Solve for x
    x = 251,145,128.91/15,282.24
  6. Step 6: Final answer
    x = 16,433.79

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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.