Home / 20,000.80-29,998.56-5,210.72

Finding the Fourth Proportional to 20,000.80, 29,998.56 and 5,210.72

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Solution

The fourth proportional to 20,000.80, 29,998.56 and 5,210.72 is: 7,815.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.80 : 29,998.56 = 5,210.72 : x
  2. Step 2: Convert to fraction form
    20,000.80/29,998.56 = 5,210.72/x
  3. Step 3: Cross multiply
    20,000.80x = 29,998.56 × 5,210.72
  4. Step 4: Simplify right side
    20,000.80x = 156,314,096.56
  5. Step 5: Solve for x
    x = 156,314,096.56/20,000.80
  6. Step 6: Final answer
    x = 7,815.39

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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.