Home / 18,833.72-28,251.66-7,146.68

Finding the Fourth Proportional to 18,833.72, 28,251.66 and 7,146.68

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Solution

The fourth proportional to 18,833.72, 28,251.66 and 7,146.68 is: 10,720.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.72 : 28,251.66 = 7,146.68 : x
  2. Step 2: Convert to fraction form
    18,833.72/28,251.66 = 7,146.68/x
  3. Step 3: Cross multiply
    18,833.72x = 28,251.66 × 7,146.68
  4. Step 4: Simplify right side
    18,833.72x = 201,905,573.49
  5. Step 5: Solve for x
    x = 201,905,573.49/18,833.72
  6. Step 6: Final answer
    x = 10,720.43

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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.