Home / 20,200.62-27,890.54-12,649.98

Finding the Fourth Proportional to 20,200.62, 27,890.54 and 12,649.98

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Solution

The fourth proportional to 20,200.62, 27,890.54 and 12,649.98 is: 17,465.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.62 : 27,890.54 = 12,649.98 : x
  2. Step 2: Convert to fraction form
    20,200.62/27,890.54 = 12,649.98/x
  3. Step 3: Cross multiply
    20,200.62x = 27,890.54 × 12,649.98
  4. Step 4: Simplify right side
    20,200.62x = 352,814,773.19
  5. Step 5: Solve for x
    x = 352,814,773.19/20,200.62
  6. Step 6: Final answer
    x = 17,465.54

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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.