Home / 21,605.20-29,814.72-12,173.80

Finding the Fourth Proportional to 21,605.20, 29,814.72 and 12,173.80

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Solution

The fourth proportional to 21,605.20, 29,814.72 and 12,173.80 is: 16,799.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.20 : 29,814.72 = 12,173.80 : x
  2. Step 2: Convert to fraction form
    21,605.20/29,814.72 = 12,173.80/x
  3. Step 3: Cross multiply
    21,605.20x = 29,814.72 × 12,173.80
  4. Step 4: Simplify right side
    21,605.20x = 362,958,438.34
  5. Step 5: Solve for x
    x = 362,958,438.34/21,605.20
  6. Step 6: Final answer
    x = 16,799.59

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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.