Home / 16,245.72-22,418.64-9,172.80

Finding the Fourth Proportional to 16,245.72, 22,418.64 and 9,172.80

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Solution

The fourth proportional to 16,245.72, 22,418.64 and 9,172.80 is: 12,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,245.72 : 22,418.64 = 9,172.80 : x
  2. Step 2: Convert to fraction form
    16,245.72/22,418.64 = 9,172.80/x
  3. Step 3: Cross multiply
    16,245.72x = 22,418.64 × 9,172.80
  4. Step 4: Simplify right side
    16,245.72x = 205,641,700.99
  5. Step 5: Solve for x
    x = 205,641,700.99/16,245.72
  6. Step 6: Final answer
    x = 12,658.21

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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.