Home / 20,422.50-30,638.10-7,095.90

Finding the Fourth Proportional to 20,422.50, 30,638.10 and 7,095.90

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Solution

The fourth proportional to 20,422.50, 30,638.10 and 7,095.90 is: 10,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.50 : 30,638.10 = 7,095.90 : x
  2. Step 2: Convert to fraction form
    20,422.50/30,638.10 = 7,095.90/x
  3. Step 3: Cross multiply
    20,422.50x = 30,638.10 × 7,095.90
  4. Step 4: Simplify right side
    20,422.50x = 217,404,893.79
  5. Step 5: Solve for x
    x = 217,404,893.79/20,422.50
  6. Step 6: Final answer
    x = 10,645.36

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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.