Home / 21,183.56-31,736.61-9,918.23

Finding the Fourth Proportional to 21,183.56, 31,736.61 and 9,918.23

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Solution

The fourth proportional to 21,183.56, 31,736.61 and 9,918.23 is: 14,859.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.56 : 31,736.61 = 9,918.23 : x
  2. Step 2: Convert to fraction form
    21,183.56/31,736.61 = 9,918.23/x
  3. Step 3: Cross multiply
    21,183.56x = 31,736.61 × 9,918.23
  4. Step 4: Simplify right side
    21,183.56x = 314,771,017.24
  5. Step 5: Solve for x
    x = 314,771,017.24/21,183.56
  6. Step 6: Final answer
    x = 14,859.21

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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.