Home / 13,550.85-20,328.19-4,191.69

Finding the Fourth Proportional to 13,550.85, 20,328.19 and 4,191.69

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Solution

The fourth proportional to 13,550.85, 20,328.19 and 4,191.69 is: 6,288.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.85 : 20,328.19 = 4,191.69 : x
  2. Step 2: Convert to fraction form
    13,550.85/20,328.19 = 4,191.69/x
  3. Step 3: Cross multiply
    13,550.85x = 20,328.19 × 4,191.69
  4. Step 4: Simplify right side
    13,550.85x = 85,209,470.74
  5. Step 5: Solve for x
    x = 85,209,470.74/13,550.85
  6. Step 6: Final answer
    x = 6,288.13

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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.