Home / 12,969.21-19,454.13-4,649.81

Finding the Fourth Proportional to 12,969.21, 19,454.13 and 4,649.81

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Solution

The fourth proportional to 12,969.21, 19,454.13 and 4,649.81 is: 6,974.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,969.21 : 19,454.13 = 4,649.81 : x
  2. Step 2: Convert to fraction form
    12,969.21/19,454.13 = 4,649.81/x
  3. Step 3: Cross multiply
    12,969.21x = 19,454.13 × 4,649.81
  4. Step 4: Simplify right side
    12,969.21x = 90,457,910.94
  5. Step 5: Solve for x
    x = 90,457,910.94/12,969.21
  6. Step 6: Final answer
    x = 6,974.82

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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.