Home / 13,122.27-18,108.07-7,456.27

Finding the Fourth Proportional to 13,122.27, 18,108.07 and 7,456.27

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Solution

The fourth proportional to 13,122.27, 18,108.07 and 7,456.27 is: 10,289.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.27 : 18,108.07 = 7,456.27 : x
  2. Step 2: Convert to fraction form
    13,122.27/18,108.07 = 7,456.27/x
  3. Step 3: Cross multiply
    13,122.27x = 18,108.07 × 7,456.27
  4. Step 4: Simplify right side
    13,122.27x = 135,018,659.10
  5. Step 5: Solve for x
    x = 135,018,659.10/13,122.27
  6. Step 6: Final answer
    x = 10,289.28

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1.5x scale

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.