Home / 12,435.12-18,649.44-5,859.54

Finding the Fourth Proportional to 12,435.12, 18,649.44 and 5,859.54

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Solution

The fourth proportional to 12,435.12, 18,649.44 and 5,859.54 is: 8,787.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.12 : 18,649.44 = 5,859.54 : x
  2. Step 2: Convert to fraction form
    12,435.12/18,649.44 = 5,859.54/x
  3. Step 3: Cross multiply
    12,435.12x = 18,649.44 × 5,859.54
  4. Step 4: Simplify right side
    12,435.12x = 109,277,139.66
  5. Step 5: Solve for x
    x = 109,277,139.66/12,435.12
  6. Step 6: Final answer
    x = 8,787.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.