Home / 20,727.24-28,603.92-11,775

Finding the Fourth Proportional to 20,727.24, 28,603.92 and 11,775

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Solution

The fourth proportional to 20,727.24, 28,603.92 and 11,775 is: 16,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.24 : 28,603.92 = 11,775 : x
  2. Step 2: Convert to fraction form
    20,727.24/28,603.92 = 11,775/x
  3. Step 3: Cross multiply
    20,727.24x = 28,603.92 × 11,775
  4. Step 4: Simplify right side
    20,727.24x = 336,811,158
  5. Step 5: Solve for x
    x = 336,811,158/20,727.24
  6. Step 6: Final answer
    x = 16,249.69

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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.