Home / 10,828-14,942.72-6,639.04

Finding the Fourth Proportional to 10,828, 14,942.72 and 6,639.04

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Solution

The fourth proportional to 10,828, 14,942.72 and 6,639.04 is: 9,161.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,828 : 14,942.72 = 6,639.04 : x
  2. Step 2: Convert to fraction form
    10,828/14,942.72 = 6,639.04/x
  3. Step 3: Cross multiply
    10,828x = 14,942.72 × 6,639.04
  4. Step 4: Simplify right side
    10,828x = 99,205,315.79
  5. Step 5: Solve for x
    x = 99,205,315.79/10,828
  6. Step 6: Final answer
    x = 9,161.92

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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.