Home / 15,351.66-21,183.78-8,637.12

Finding the Fourth Proportional to 15,351.66, 21,183.78 and 8,637.12

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Solution

The fourth proportional to 15,351.66, 21,183.78 and 8,637.12 is: 11,918.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.66 : 21,183.78 = 8,637.12 : x
  2. Step 2: Convert to fraction form
    15,351.66/21,183.78 = 8,637.12/x
  3. Step 3: Cross multiply
    15,351.66x = 21,183.78 × 8,637.12
  4. Step 4: Simplify right side
    15,351.66x = 182,966,849.91
  5. Step 5: Solve for x
    x = 182,966,849.91/15,351.66
  6. Step 6: Final answer
    x = 11,918.38

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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.