Home / 13,440.99-20,159.21-4,078.75

Finding the Fourth Proportional to 13,440.99, 20,159.21 and 4,078.75

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Solution

The fourth proportional to 13,440.99, 20,159.21 and 4,078.75 is: 6,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.99 : 20,159.21 = 4,078.75 : x
  2. Step 2: Convert to fraction form
    13,440.99/20,159.21 = 4,078.75/x
  3. Step 3: Cross multiply
    13,440.99x = 20,159.21 × 4,078.75
  4. Step 4: Simplify right side
    13,440.99x = 82,224,377.79
  5. Step 5: Solve for x
    x = 82,224,377.79/13,440.99
  6. Step 6: Final answer
    x = 6,117.43

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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.