Home / 13,121.92-18,122.88-10,173.36

Finding the Fourth Proportional to 13,121.92, 18,122.88 and 10,173.36

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Solution

The fourth proportional to 13,121.92, 18,122.88 and 10,173.36 is: 14,050.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.92 : 18,122.88 = 10,173.36 : x
  2. Step 2: Convert to fraction form
    13,121.92/18,122.88 = 10,173.36/x
  3. Step 3: Cross multiply
    13,121.92x = 18,122.88 × 10,173.36
  4. Step 4: Simplify right side
    13,121.92x = 184,370,582.48
  5. Step 5: Solve for x
    x = 184,370,582.48/13,121.92
  6. Step 6: Final answer
    x = 14,050.58

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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.