Home / 21,120.35-31,683.56-6,884.04

Finding the Fourth Proportional to 21,120.35, 31,683.56 and 6,884.04

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Solution

The fourth proportional to 21,120.35, 31,683.56 and 6,884.04 is: 10,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.35 : 31,683.56 = 6,884.04 : x
  2. Step 2: Convert to fraction form
    21,120.35/31,683.56 = 6,884.04/x
  3. Step 3: Cross multiply
    21,120.35x = 31,683.56 × 6,884.04
  4. Step 4: Simplify right side
    21,120.35x = 218,110,800.56
  5. Step 5: Solve for x
    x = 218,110,800.56/21,120.35
  6. Step 6: Final answer
    x = 10,327.05

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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.