Home / 18,717.28-28,086.08-7,029.60

Finding the Fourth Proportional to 18,717.28, 28,086.08 and 7,029.60

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Solution

The fourth proportional to 18,717.28, 28,086.08 and 7,029.60 is: 10,548.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.28 : 28,086.08 = 7,029.60 : x
  2. Step 2: Convert to fraction form
    18,717.28/28,086.08 = 7,029.60/x
  3. Step 3: Cross multiply
    18,717.28x = 28,086.08 × 7,029.60
  4. Step 4: Simplify right side
    18,717.28x = 197,433,907.97
  5. Step 5: Solve for x
    x = 197,433,907.97/18,717.28
  6. Step 6: Final answer
    x = 10,548.22

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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.