Home / 20,664.06-28,514.12-11,711.40

Finding the Fourth Proportional to 20,664.06, 28,514.12 and 11,711.40

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Solution

The fourth proportional to 20,664.06, 28,514.12 and 11,711.40 is: 16,160.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.06 : 28,514.12 = 11,711.40 : x
  2. Step 2: Convert to fraction form
    20,664.06/28,514.12 = 11,711.40/x
  3. Step 3: Cross multiply
    20,664.06x = 28,514.12 × 11,711.40
  4. Step 4: Simplify right side
    20,664.06x = 333,940,264.97
  5. Step 5: Solve for x
    x = 333,940,264.97/20,664.06
  6. Step 6: Final answer
    x = 16,160.44

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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.