Home / 28,660.43-39,550.88-15,913.67

Finding the Fourth Proportional to 28,660.43, 39,550.88 and 15,913.67

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Solution

The fourth proportional to 28,660.43, 39,550.88 and 15,913.67 is: 21,960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.43 : 39,550.88 = 15,913.67 : x
  2. Step 2: Convert to fraction form
    28,660.43/39,550.88 = 15,913.67/x
  3. Step 3: Cross multiply
    28,660.43x = 39,550.88 × 15,913.67
  4. Step 4: Simplify right side
    28,660.43x = 629,399,494.56
  5. Step 5: Solve for x
    x = 629,399,494.56/28,660.43
  6. Step 6: Final answer
    x = 21,960.57

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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.