Home / 15,351.78-21,183.96-8,637.27

Finding the Fourth Proportional to 15,351.78, 21,183.96 and 8,637.27

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Solution

The fourth proportional to 15,351.78, 21,183.96 and 8,637.27 is: 11,918.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.78 : 21,183.96 = 8,637.27 : x
  2. Step 2: Convert to fraction form
    15,351.78/21,183.96 = 8,637.27/x
  3. Step 3: Cross multiply
    15,351.78x = 21,183.96 × 8,637.27
  4. Step 4: Simplify right side
    15,351.78x = 182,971,582.19
  5. Step 5: Solve for x
    x = 182,971,582.19/15,351.78
  6. Step 6: Final answer
    x = 11,918.59

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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.