Home / 12,664.49-18,990.77-7,401.02

Finding the Fourth Proportional to 12,664.49, 18,990.77 and 7,401.02

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Solution

The fourth proportional to 12,664.49, 18,990.77 and 7,401.02 is: 11,098.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.49 : 18,990.77 = 7,401.02 : x
  2. Step 2: Convert to fraction form
    12,664.49/18,990.77 = 7,401.02/x
  3. Step 3: Cross multiply
    12,664.49x = 18,990.77 × 7,401.02
  4. Step 4: Simplify right side
    12,664.49x = 140,551,068.59
  5. Step 5: Solve for x
    x = 140,551,068.59/12,664.49
  6. Step 6: Final answer
    x = 11,098.04

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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.