Home / 15,499.14-21,388.35-8,425.38

Finding the Fourth Proportional to 15,499.14, 21,388.35 and 8,425.38

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Solution

The fourth proportional to 15,499.14, 21,388.35 and 8,425.38 is: 11,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.14 : 21,388.35 = 8,425.38 : x
  2. Step 2: Convert to fraction form
    15,499.14/21,388.35 = 8,425.38/x
  3. Step 3: Cross multiply
    15,499.14x = 21,388.35 × 8,425.38
  4. Step 4: Simplify right side
    15,499.14x = 180,204,976.32
  5. Step 5: Solve for x
    x = 180,204,976.32/15,499.14
  6. Step 6: Final answer
    x = 11,626.77

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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.