Home / 43,021.06-64,532.67-20,830.30

Finding the Fourth Proportional to 43,021.06, 64,532.67 and 20,830.30

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Solution

The fourth proportional to 43,021.06, 64,532.67 and 20,830.30 is: 31,245.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,021.06 : 64,532.67 = 20,830.30 : x
  2. Step 2: Convert to fraction form
    43,021.06/64,532.67 = 20,830.30/x
  3. Step 3: Cross multiply
    43,021.06x = 64,532.67 × 20,830.30
  4. Step 4: Simplify right side
    43,021.06x = 1,344,234,875.90
  5. Step 5: Solve for x
    x = 1,344,234,875.90/43,021.06
  6. Step 6: Final answer
    x = 31,245.97

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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.