Home / 20,910.08-28,848.60-11,951.12

Finding the Fourth Proportional to 20,910.08, 28,848.60 and 11,951.12

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Solution

The fourth proportional to 20,910.08, 28,848.60 and 11,951.12 is: 16,488.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.08 : 28,848.60 = 11,951.12 : x
  2. Step 2: Convert to fraction form
    20,910.08/28,848.60 = 11,951.12/x
  3. Step 3: Cross multiply
    20,910.08x = 28,848.60 × 11,951.12
  4. Step 4: Simplify right side
    20,910.08x = 344,773,080.43
  5. Step 5: Solve for x
    x = 344,773,080.43/20,910.08
  6. Step 6: Final answer
    x = 16,488.37

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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.