Home / 15,683.12-21,618.56-11,198.96

Finding the Fourth Proportional to 15,683.12, 21,618.56 and 11,198.96

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Solution

The fourth proportional to 15,683.12, 21,618.56 and 11,198.96 is: 15,437.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.12 : 21,618.56 = 11,198.96 : x
  2. Step 2: Convert to fraction form
    15,683.12/21,618.56 = 11,198.96/x
  3. Step 3: Cross multiply
    15,683.12x = 21,618.56 × 11,198.96
  4. Step 4: Simplify right side
    15,683.12x = 242,105,388.70
  5. Step 5: Solve for x
    x = 242,105,388.70/15,683.12
  6. Step 6: Final answer
    x = 15,437.32

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1.5x scale

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.