Home / 13,470.80-20,209.85-5,146.43

Finding the Fourth Proportional to 13,470.80, 20,209.85 and 5,146.43

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Solution

The fourth proportional to 13,470.80, 20,209.85 and 5,146.43 is: 7,721.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.80 : 20,209.85 = 5,146.43 : x
  2. Step 2: Convert to fraction form
    13,470.80/20,209.85 = 5,146.43/x
  3. Step 3: Cross multiply
    13,470.80x = 20,209.85 × 5,146.43
  4. Step 4: Simplify right side
    13,470.80x = 104,008,451.55
  5. Step 5: Solve for x
    x = 104,008,451.55/13,470.80
  6. Step 6: Final answer
    x = 7,721.03

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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.