Home / 20,755.58-28,638.98-11,802.56

Finding the Fourth Proportional to 20,755.58, 28,638.98 and 11,802.56

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Solution

The fourth proportional to 20,755.58, 28,638.98 and 11,802.56 is: 16,285.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.58 : 28,638.98 = 11,802.56 : x
  2. Step 2: Convert to fraction form
    20,755.58/28,638.98 = 11,802.56/x
  3. Step 3: Cross multiply
    20,755.58x = 28,638.98 × 11,802.56
  4. Step 4: Simplify right side
    20,755.58x = 338,013,279.79
  5. Step 5: Solve for x
    x = 338,013,279.79/20,755.58
  6. Step 6: Final answer
    x = 16,285.42

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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.