Home / 13,120.40-18,082.68-11,254.16

Finding the Fourth Proportional to 13,120.40, 18,082.68 and 11,254.16

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Solution

The fourth proportional to 13,120.40, 18,082.68 and 11,254.16 is: 15,510.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.40 : 18,082.68 = 11,254.16 : x
  2. Step 2: Convert to fraction form
    13,120.40/18,082.68 = 11,254.16/x
  3. Step 3: Cross multiply
    13,120.40x = 18,082.68 × 11,254.16
  4. Step 4: Simplify right side
    13,120.40x = 203,505,373.95
  5. Step 5: Solve for x
    x = 203,505,373.95/13,120.40
  6. Step 6: Final answer
    x = 15,510.61

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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.