Home / 20,966.36-28,932.30-11,406.18

Finding the Fourth Proportional to 20,966.36, 28,932.30 and 11,406.18

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Solution

The fourth proportional to 20,966.36, 28,932.30 and 11,406.18 is: 15,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.36 : 28,932.30 = 11,406.18 : x
  2. Step 2: Convert to fraction form
    20,966.36/28,932.30 = 11,406.18/x
  3. Step 3: Cross multiply
    20,966.36x = 28,932.30 × 11,406.18
  4. Step 4: Simplify right side
    20,966.36x = 330,007,021.61
  5. Step 5: Solve for x
    x = 330,007,021.61/20,966.36
  6. Step 6: Final answer
    x = 15,739.83

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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.