Home / 11,128.75-16,669.13-10,474.48

Finding the Fourth Proportional to 11,128.75, 16,669.13 and 10,474.48

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Solution

The fourth proportional to 11,128.75, 16,669.13 and 10,474.48 is: 15,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.75 : 16,669.13 = 10,474.48 : x
  2. Step 2: Convert to fraction form
    11,128.75/16,669.13 = 10,474.48/x
  3. Step 3: Cross multiply
    11,128.75x = 16,669.13 × 10,474.48
  4. Step 4: Simplify right side
    11,128.75x = 174,600,333.08
  5. Step 5: Solve for x
    x = 174,600,333.08/11,128.75
  6. Step 6: Final answer
    x = 15,689.12

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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.