Home / 20,477.80-28,257.30-11,524.52

Finding the Fourth Proportional to 20,477.80, 28,257.30 and 11,524.52

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Solution

The fourth proportional to 20,477.80, 28,257.30 and 11,524.52 is: 15,902.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.80 : 28,257.30 = 11,524.52 : x
  2. Step 2: Convert to fraction form
    20,477.80/28,257.30 = 11,524.52/x
  3. Step 3: Cross multiply
    20,477.80x = 28,257.30 × 11,524.52
  4. Step 4: Simplify right side
    20,477.80x = 325,651,819.00
  5. Step 5: Solve for x
    x = 325,651,819.00/20,477.80
  6. Step 6: Final answer
    x = 15,902.68

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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.