Home / 15,756.86-21,744.92-8,683.74

Finding the Fourth Proportional to 15,756.86, 21,744.92 and 8,683.74

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Solution

The fourth proportional to 15,756.86, 21,744.92 and 8,683.74 is: 11,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.86 : 21,744.92 = 8,683.74 : x
  2. Step 2: Convert to fraction form
    15,756.86/21,744.92 = 8,683.74/x
  3. Step 3: Cross multiply
    15,756.86x = 21,744.92 × 8,683.74
  4. Step 4: Simplify right side
    15,756.86x = 188,827,198.95
  5. Step 5: Solve for x
    x = 188,827,198.95/15,756.86
  6. Step 6: Final answer
    x = 11,983.81

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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.