Home / 15,231.51-21,020.30-9,183.69

Finding the Fourth Proportional to 15,231.51, 21,020.30 and 9,183.69

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Solution

The fourth proportional to 15,231.51, 21,020.30 and 9,183.69 is: 12,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.51 : 21,020.30 = 9,183.69 : x
  2. Step 2: Convert to fraction form
    15,231.51/21,020.30 = 9,183.69/x
  3. Step 3: Cross multiply
    15,231.51x = 21,020.30 × 9,183.69
  4. Step 4: Simplify right side
    15,231.51x = 193,043,918.91
  5. Step 5: Solve for x
    x = 193,043,918.91/15,231.51
  6. Step 6: Final answer
    x = 12,673.98

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Double scale
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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.