Home / 12,478.57-18,604.32-11,076.15

Finding the Fourth Proportional to 12,478.57, 18,604.32 and 11,076.15

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Solution

The fourth proportional to 12,478.57, 18,604.32 and 11,076.15 is: 16,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.57 : 18,604.32 = 11,076.15 : x
  2. Step 2: Convert to fraction form
    12,478.57/18,604.32 = 11,076.15/x
  3. Step 3: Cross multiply
    12,478.57x = 18,604.32 × 11,076.15
  4. Step 4: Simplify right side
    12,478.57x = 206,064,238.97
  5. Step 5: Solve for x
    x = 206,064,238.97/12,478.57
  6. Step 6: Final answer
    x = 16,513.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.