Home / 20,511.60-28,292.85-12,944.58

Finding the Fourth Proportional to 20,511.60, 28,292.85 and 12,944.58

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Solution

The fourth proportional to 20,511.60, 28,292.85 and 12,944.58 is: 17,855.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.60 : 28,292.85 = 12,944.58 : x
  2. Step 2: Convert to fraction form
    20,511.60/28,292.85 = 12,944.58/x
  3. Step 3: Cross multiply
    20,511.60x = 28,292.85 × 12,944.58
  4. Step 4: Simplify right side
    20,511.60x = 366,239,060.25
  5. Step 5: Solve for x
    x = 366,239,060.25/20,511.60
  6. Step 6: Final answer
    x = 17,855.22

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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.