Home / 12,255.57-16,922.21-9,418.46

Finding the Fourth Proportional to 12,255.57, 16,922.21 and 9,418.46

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Solution

The fourth proportional to 12,255.57, 16,922.21 and 9,418.46 is: 13,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.57 : 16,922.21 = 9,418.46 : x
  2. Step 2: Convert to fraction form
    12,255.57/16,922.21 = 9,418.46/x
  3. Step 3: Cross multiply
    12,255.57x = 16,922.21 × 9,418.46
  4. Step 4: Simplify right side
    12,255.57x = 159,381,026.29
  5. Step 5: Solve for x
    x = 159,381,026.29/12,255.57
  6. Step 6: Final answer
    x = 13,004.78

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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.