Home / 15,330.25-21,155.56-8,617.02

Finding the Fourth Proportional to 15,330.25, 21,155.56 and 8,617.02

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Solution

The fourth proportional to 15,330.25, 21,155.56 and 8,617.02 is: 11,891.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.25 : 21,155.56 = 8,617.02 : x
  2. Step 2: Convert to fraction form
    15,330.25/21,155.56 = 8,617.02/x
  3. Step 3: Cross multiply
    15,330.25x = 21,155.56 × 8,617.02
  4. Step 4: Simplify right side
    15,330.25x = 182,297,883.63
  5. Step 5: Solve for x
    x = 182,297,883.63/15,330.25
  6. Step 6: Final answer
    x = 11,891.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.