Home / 15,347.87-21,183.09-9,976.96

Finding the Fourth Proportional to 15,347.87, 21,183.09 and 9,976.96

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Solution

The fourth proportional to 15,347.87, 21,183.09 and 9,976.96 is: 13,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.87 : 21,183.09 = 9,976.96 : x
  2. Step 2: Convert to fraction form
    15,347.87/21,183.09 = 9,976.96/x
  3. Step 3: Cross multiply
    15,347.87x = 21,183.09 × 9,976.96
  4. Step 4: Simplify right side
    15,347.87x = 211,342,791.72
  5. Step 5: Solve for x
    x = 211,342,791.72/15,347.87
  6. Step 6: Final answer
    x = 13,770.17

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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.