Home / 13,380.06-20,071.34-3,519.35

Finding the Fourth Proportional to 13,380.06, 20,071.34 and 3,519.35

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Solution

The fourth proportional to 13,380.06, 20,071.34 and 3,519.35 is: 5,279.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.06 : 20,071.34 = 3,519.35 : x
  2. Step 2: Convert to fraction form
    13,380.06/20,071.34 = 3,519.35/x
  3. Step 3: Cross multiply
    13,380.06x = 20,071.34 × 3,519.35
  4. Step 4: Simplify right side
    13,380.06x = 70,637,952.48
  5. Step 5: Solve for x
    x = 70,637,952.48/13,380.06
  6. Step 6: Final answer
    x = 5,279.34

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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.