Home / 18,962.40-28,447.56-7,275.54

Finding the Fourth Proportional to 18,962.40, 28,447.56 and 7,275.54

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Solution

The fourth proportional to 18,962.40, 28,447.56 and 7,275.54 is: 10,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.40 : 28,447.56 = 7,275.54 : x
  2. Step 2: Convert to fraction form
    18,962.40/28,447.56 = 7,275.54/x
  3. Step 3: Cross multiply
    18,962.40x = 28,447.56 × 7,275.54
  4. Step 4: Simplify right side
    18,962.40x = 206,971,360.68
  5. Step 5: Solve for x
    x = 206,971,360.68/18,962.40
  6. Step 6: Final answer
    x = 10,914.83

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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.