Home / 20,662.54-28,514.19-11,711.74

Finding the Fourth Proportional to 20,662.54, 28,514.19 and 11,711.74

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Solution

The fourth proportional to 20,662.54, 28,514.19 and 11,711.74 is: 16,162.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.54 : 28,514.19 = 11,711.74 : x
  2. Step 2: Convert to fraction form
    20,662.54/28,514.19 = 11,711.74/x
  3. Step 3: Cross multiply
    20,662.54x = 28,514.19 × 11,711.74
  4. Step 4: Simplify right side
    20,662.54x = 333,950,637.02
  5. Step 5: Solve for x
    x = 333,950,637.02/20,662.54
  6. Step 6: Final answer
    x = 16,162.13

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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.