Home / 13,657.30-18,846.66-7,689.28

Finding the Fourth Proportional to 13,657.30, 18,846.66 and 7,689.28

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Solution

The fourth proportional to 13,657.30, 18,846.66 and 7,689.28 is: 10,610.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.30 : 18,846.66 = 7,689.28 : x
  2. Step 2: Convert to fraction form
    13,657.30/18,846.66 = 7,689.28/x
  3. Step 3: Cross multiply
    13,657.30x = 18,846.66 × 7,689.28
  4. Step 4: Simplify right side
    13,657.30x = 144,917,245.80
  5. Step 5: Solve for x
    x = 144,917,245.80/13,657.30
  6. Step 6: Final answer
    x = 10,610.97

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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.