Home / 13,550.85-20,332.31-8,619.21

Finding the Fourth Proportional to 13,550.85, 20,332.31 and 8,619.21

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Solution

The fourth proportional to 13,550.85, 20,332.31 and 8,619.21 is: 12,932.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.85 : 20,332.31 = 8,619.21 : x
  2. Step 2: Convert to fraction form
    13,550.85/20,332.31 = 8,619.21/x
  3. Step 3: Cross multiply
    13,550.85x = 20,332.31 × 8,619.21
  4. Step 4: Simplify right side
    13,550.85x = 175,248,449.68
  5. Step 5: Solve for x
    x = 175,248,449.68/13,550.85
  6. Step 6: Final answer
    x = 12,932.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.