Home / 15,324.49-21,147.81-8,610.12

Finding the Fourth Proportional to 15,324.49, 21,147.81 and 8,610.12

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Solution

The fourth proportional to 15,324.49, 21,147.81 and 8,610.12 is: 11,881.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.49 : 21,147.81 = 8,610.12 : x
  2. Step 2: Convert to fraction form
    15,324.49/21,147.81 = 8,610.12/x
  3. Step 3: Cross multiply
    15,324.49x = 21,147.81 × 8,610.12
  4. Step 4: Simplify right side
    15,324.49x = 182,085,181.84
  5. Step 5: Solve for x
    x = 182,085,181.84/15,324.49
  6. Step 6: Final answer
    x = 11,881.97

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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.