Home / 20,816.09-28,726.69-11,864.42

Finding the Fourth Proportional to 20,816.09, 28,726.69 and 11,864.42

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Solution

The fourth proportional to 20,816.09, 28,726.69 and 11,864.42 is: 16,373.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.09 : 28,726.69 = 11,864.42 : x
  2. Step 2: Convert to fraction form
    20,816.09/28,726.69 = 11,864.42/x
  3. Step 3: Cross multiply
    20,816.09x = 28,726.69 × 11,864.42
  4. Step 4: Simplify right side
    20,816.09x = 340,825,515.37
  5. Step 5: Solve for x
    x = 340,825,515.37/20,816.09
  6. Step 6: Final answer
    x = 16,373.18

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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.