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Finding the Fourth Proportional to 13,388.58, 20,080.58 and 3,527.94

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Solution

The fourth proportional to 13,388.58, 20,080.58 and 3,527.94 is: 5,291.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.58 : 20,080.58 = 3,527.94 : x
  2. Step 2: Convert to fraction form
    13,388.58/20,080.58 = 3,527.94/x
  3. Step 3: Cross multiply
    13,388.58x = 20,080.58 × 3,527.94
  4. Step 4: Simplify right side
    13,388.58x = 70,843,063.77
  5. Step 5: Solve for x
    x = 70,843,063.77/13,388.58
  6. Step 6: Final answer
    x = 5,291.31

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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.