Home / 15,757.28-21,744.16-8,683.68

Finding the Fourth Proportional to 15,757.28, 21,744.16 and 8,683.68

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Solution

The fourth proportional to 15,757.28, 21,744.16 and 8,683.68 is: 11,982.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.28 : 21,744.16 = 8,683.68 : x
  2. Step 2: Convert to fraction form
    15,757.28/21,744.16 = 8,683.68/x
  3. Step 3: Cross multiply
    15,757.28x = 21,744.16 × 8,683.68
  4. Step 4: Simplify right side
    15,757.28x = 188,819,327.31
  5. Step 5: Solve for x
    x = 188,819,327.31/15,757.28
  6. Step 6: Final answer
    x = 11,982.99

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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.