Home / 20,816.01-28,726.62-11,385.27

Finding the Fourth Proportional to 20,816.01, 28,726.62 and 11,385.27

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Solution

The fourth proportional to 20,816.01, 28,726.62 and 11,385.27 is: 15,711.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.01 : 28,726.62 = 11,385.27 : x
  2. Step 2: Convert to fraction form
    20,816.01/28,726.62 = 11,385.27/x
  3. Step 3: Cross multiply
    20,816.01x = 28,726.62 × 11,385.27
  4. Step 4: Simplify right side
    20,816.01x = 327,060,324.89
  5. Step 5: Solve for x
    x = 327,060,324.89/20,816.01
  6. Step 6: Final answer
    x = 15,711.96

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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.