Home / 20,998.41-28,977.80-12,045.53

Finding the Fourth Proportional to 20,998.41, 28,977.80 and 12,045.53

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Solution

The fourth proportional to 20,998.41, 28,977.80 and 12,045.53 is: 16,622.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.41 : 28,977.80 = 12,045.53 : x
  2. Step 2: Convert to fraction form
    20,998.41/28,977.80 = 12,045.53/x
  3. Step 3: Cross multiply
    20,998.41x = 28,977.80 × 12,045.53
  4. Step 4: Simplify right side
    20,998.41x = 349,052,876.21
  5. Step 5: Solve for x
    x = 349,052,876.21/20,998.41
  6. Step 6: Final answer
    x = 16,622.83

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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.