Home / 13,120.37-18,117.42-11,250.48

Finding the Fourth Proportional to 13,120.37, 18,117.42 and 11,250.48

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Solution

The fourth proportional to 13,120.37, 18,117.42 and 11,250.48 is: 15,535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.37 : 18,117.42 = 11,250.48 : x
  2. Step 2: Convert to fraction form
    13,120.37/18,117.42 = 11,250.48/x
  3. Step 3: Cross multiply
    13,120.37x = 18,117.42 × 11,250.48
  4. Step 4: Simplify right side
    13,120.37x = 203,829,671.36
  5. Step 5: Solve for x
    x = 203,829,671.36/13,120.37
  6. Step 6: Final answer
    x = 15,535.37

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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.