Home / 20,720.52-28,595.93-11,770.83

Finding the Fourth Proportional to 20,720.52, 28,595.93 and 11,770.83

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Solution

The fourth proportional to 20,720.52, 28,595.93 and 11,770.83 is: 16,244.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.52 : 28,595.93 = 11,770.83 : x
  2. Step 2: Convert to fraction form
    20,720.52/28,595.93 = 11,770.83/x
  3. Step 3: Cross multiply
    20,720.52x = 28,595.93 × 11,770.83
  4. Step 4: Simplify right side
    20,720.52x = 336,597,771.87
  5. Step 5: Solve for x
    x = 336,597,771.87/20,720.52
  6. Step 6: Final answer
    x = 16,244.66

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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.