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Finding the Fourth Proportional to 18,698.59, 28,028.17 and 6,215.28

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Solution

The fourth proportional to 18,698.59, 28,028.17 and 6,215.28 is: 9,316.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.59 : 28,028.17 = 6,215.28 : x
  2. Step 2: Convert to fraction form
    18,698.59/28,028.17 = 6,215.28/x
  3. Step 3: Cross multiply
    18,698.59x = 28,028.17 × 6,215.28
  4. Step 4: Simplify right side
    18,698.59x = 174,202,753.22
  5. Step 5: Solve for x
    x = 174,202,753.22/18,698.59
  6. Step 6: Final answer
    x = 9,316.36

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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.