Home / 20,055.20-27,677.12-11,558.57

Finding the Fourth Proportional to 20,055.20, 27,677.12 and 11,558.57

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Solution

The fourth proportional to 20,055.20, 27,677.12 and 11,558.57 is: 15,951.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.20 : 27,677.12 = 11,558.57 : x
  2. Step 2: Convert to fraction form
    20,055.20/27,677.12 = 11,558.57/x
  3. Step 3: Cross multiply
    20,055.20x = 27,677.12 × 11,558.57
  4. Step 4: Simplify right side
    20,055.20x = 319,907,732.74
  5. Step 5: Solve for x
    x = 319,907,732.74/20,055.20
  6. Step 6: Final answer
    x = 15,951.36

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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.