Home / 18,708.18-28,062.26-12,480.36

Finding the Fourth Proportional to 18,708.18, 28,062.26 and 12,480.36

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Solution

The fourth proportional to 18,708.18, 28,062.26 and 12,480.36 is: 18,720.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.18 : 28,062.26 = 12,480.36 : x
  2. Step 2: Convert to fraction form
    18,708.18/28,062.26 = 12,480.36/x
  3. Step 3: Cross multiply
    18,708.18x = 28,062.26 × 12,480.36
  4. Step 4: Simplify right side
    18,708.18x = 350,227,107.21
  5. Step 5: Solve for x
    x = 350,227,107.21/18,708.18
  6. Step 6: Final answer
    x = 18,720.53

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1.5x scale

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.