Home / 20,638.22-30,958.79-10,117.04

Finding the Fourth Proportional to 20,638.22, 30,958.79 and 10,117.04

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Solution

The fourth proportional to 20,638.22, 30,958.79 and 10,117.04 is: 15,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.22 : 30,958.79 = 10,117.04 : x
  2. Step 2: Convert to fraction form
    20,638.22/30,958.79 = 10,117.04/x
  3. Step 3: Cross multiply
    20,638.22x = 30,958.79 × 10,117.04
  4. Step 4: Simplify right side
    20,638.22x = 313,211,111.40
  5. Step 5: Solve for x
    x = 313,211,111.40/20,638.22
  6. Step 6: Final answer
    x = 15,176.27

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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.