Home / 15,756.75-21,744.32-8,683.83

Finding the Fourth Proportional to 15,756.75, 21,744.32 and 8,683.83

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Solution

The fourth proportional to 15,756.75, 21,744.32 and 8,683.83 is: 11,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.75 : 21,744.32 = 8,683.83 : x
  2. Step 2: Convert to fraction form
    15,756.75/21,744.32 = 8,683.83/x
  3. Step 3: Cross multiply
    15,756.75x = 21,744.32 × 8,683.83
  4. Step 4: Simplify right side
    15,756.75x = 188,823,934.93
  5. Step 5: Solve for x
    x = 188,823,934.93/15,756.75
  6. Step 6: Final answer
    x = 11,983.69

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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.