Home / 15,756.72-21,744.41-8,683.39

Finding the Fourth Proportional to 15,756.72, 21,744.41 and 8,683.39

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Solution

The fourth proportional to 15,756.72, 21,744.41 and 8,683.39 is: 11,983.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.72 : 21,744.41 = 8,683.39 : x
  2. Step 2: Convert to fraction form
    15,756.72/21,744.41 = 8,683.39/x
  3. Step 3: Cross multiply
    15,756.72x = 21,744.41 × 8,683.39
  4. Step 4: Simplify right side
    15,756.72x = 188,815,192.35
  5. Step 5: Solve for x
    x = 188,815,192.35/15,756.72
  6. Step 6: Final answer
    x = 11,983.15

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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.