Home / 20,964.90-28,932.97-11,534.07

Finding the Fourth Proportional to 20,964.90, 28,932.97 and 11,534.07

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Solution

The fourth proportional to 20,964.90, 28,932.97 and 11,534.07 is: 15,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.90 : 28,932.97 = 11,534.07 : x
  2. Step 2: Convert to fraction form
    20,964.90/28,932.97 = 11,534.07/x
  3. Step 3: Cross multiply
    20,964.90x = 28,932.97 × 11,534.07
  4. Step 4: Simplify right side
    20,964.90x = 333,714,901.29
  5. Step 5: Solve for x
    x = 333,714,901.29/20,964.90
  6. Step 6: Final answer
    x = 15,917.79

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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.