Home / 20,505.98-28,288.23-12,008.27

Finding the Fourth Proportional to 20,505.98, 28,288.23 and 12,008.27

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Solution

The fourth proportional to 20,505.98, 28,288.23 and 12,008.27 is: 16,565.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.98 : 28,288.23 = 12,008.27 : x
  2. Step 2: Convert to fraction form
    20,505.98/28,288.23 = 12,008.27/x
  3. Step 3: Cross multiply
    20,505.98x = 28,288.23 × 12,008.27
  4. Step 4: Simplify right side
    20,505.98x = 339,692,562.22
  5. Step 5: Solve for x
    x = 339,692,562.22/20,505.98
  6. Step 6: Final answer
    x = 16,565.54

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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.