Home / 18,708.13-28,062.16-7,612.35

Finding the Fourth Proportional to 18,708.13, 28,062.16 and 7,612.35

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Solution

The fourth proportional to 18,708.13, 28,062.16 and 7,612.35 is: 11,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.13 : 28,062.16 = 7,612.35 : x
  2. Step 2: Convert to fraction form
    18,708.13/28,062.16 = 7,612.35/x
  3. Step 3: Cross multiply
    18,708.13x = 28,062.16 × 7,612.35
  4. Step 4: Simplify right side
    18,708.13x = 213,618,902.23
  5. Step 5: Solve for x
    x = 213,618,902.23/18,708.13
  6. Step 6: Final answer
    x = 11,418.51

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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.