Home / 13,470.96-20,209.14-5,679.84

Finding the Fourth Proportional to 13,470.96, 20,209.14 and 5,679.84

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Solution

The fourth proportional to 13,470.96, 20,209.14 and 5,679.84 is: 8,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.96 : 20,209.14 = 5,679.84 : x
  2. Step 2: Convert to fraction form
    13,470.96/20,209.14 = 5,679.84/x
  3. Step 3: Cross multiply
    13,470.96x = 20,209.14 × 5,679.84
  4. Step 4: Simplify right side
    13,470.96x = 114,784,681.74
  5. Step 5: Solve for x
    x = 114,784,681.74/13,470.96
  6. Step 6: Final answer
    x = 8,520.90

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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.