Home / 20,727.45-28,609.47-11,775.33

Finding the Fourth Proportional to 20,727.45, 28,609.47 and 11,775.33

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Solution

The fourth proportional to 20,727.45, 28,609.47 and 11,775.33 is: 16,253.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.45 : 28,609.47 = 11,775.33 : x
  2. Step 2: Convert to fraction form
    20,727.45/28,609.47 = 11,775.33/x
  3. Step 3: Cross multiply
    20,727.45x = 28,609.47 × 11,775.33
  4. Step 4: Simplify right side
    20,727.45x = 336,885,950.38
  5. Step 5: Solve for x
    x = 336,885,950.38/20,727.45
  6. Step 6: Final answer
    x = 16,253.13

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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.