Home / 20,682.37-28,551.59-12,731.41

Finding the Fourth Proportional to 20,682.37, 28,551.59 and 12,731.41

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Solution

The fourth proportional to 20,682.37, 28,551.59 and 12,731.41 is: 17,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.37 : 28,551.59 = 12,731.41 : x
  2. Step 2: Convert to fraction form
    20,682.37/28,551.59 = 12,731.41/x
  3. Step 3: Cross multiply
    20,682.37x = 28,551.59 × 12,731.41
  4. Step 4: Simplify right side
    20,682.37x = 363,501,998.44
  5. Step 5: Solve for x
    x = 363,501,998.44/20,682.37
  6. Step 6: Final answer
    x = 17,575.45

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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.