Home / 13,971.06-20,956.40-3,441.20

Finding the Fourth Proportional to 13,971.06, 20,956.40 and 3,441.20

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Solution

The fourth proportional to 13,971.06, 20,956.40 and 3,441.20 is: 5,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.06 : 20,956.40 = 3,441.20 : x
  2. Step 2: Convert to fraction form
    13,971.06/20,956.40 = 3,441.20/x
  3. Step 3: Cross multiply
    13,971.06x = 20,956.40 × 3,441.20
  4. Step 4: Simplify right side
    13,971.06x = 72,115,146.47
  5. Step 5: Solve for x
    x = 72,115,146.47/13,971.06
  6. Step 6: Final answer
    x = 5,161.75

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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.