Home / 18,712.59-28,052.37-7,628.55

Finding the Fourth Proportional to 18,712.59, 28,052.37 and 7,628.55

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Solution

The fourth proportional to 18,712.59, 28,052.37 and 7,628.55 is: 11,436.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.59 : 28,052.37 = 7,628.55 : x
  2. Step 2: Convert to fraction form
    18,712.59/28,052.37 = 7,628.55/x
  3. Step 3: Cross multiply
    18,712.59x = 28,052.37 × 7,628.55
  4. Step 4: Simplify right side
    18,712.59x = 213,998,907.16
  5. Step 5: Solve for x
    x = 213,998,907.16/18,712.59
  6. Step 6: Final answer
    x = 11,436.09

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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.