Home / 13,970.13-20,956.40-3,581.88

Finding the Fourth Proportional to 13,970.13, 20,956.40 and 3,581.88

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Solution

The fourth proportional to 13,970.13, 20,956.40 and 3,581.88 is: 5,373.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,970.13 : 20,956.40 = 3,581.88 : x
  2. Step 2: Convert to fraction form
    13,970.13/20,956.40 = 3,581.88/x
  3. Step 3: Cross multiply
    13,970.13x = 20,956.40 × 3,581.88
  4. Step 4: Simplify right side
    13,970.13x = 75,063,310.03
  5. Step 5: Solve for x
    x = 75,063,310.03/13,970.13
  6. Step 6: Final answer
    x = 5,373.13

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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.