Home / 43,899.84-65,851.20-20,520

Finding the Fourth Proportional to 43,899.84, 65,851.20 and 20,520

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Solution

The fourth proportional to 43,899.84, 65,851.20 and 20,520 is: 30,780.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,899.84 : 65,851.20 = 20,520 : x
  2. Step 2: Convert to fraction form
    43,899.84/65,851.20 = 20,520/x
  3. Step 3: Cross multiply
    43,899.84x = 65,851.20 × 20,520
  4. Step 4: Simplify right side
    43,899.84x = 1,351,266,624
  5. Step 5: Solve for x
    x = 1,351,266,624/43,899.84
  6. Step 6: Final answer
    x = 30,780.67

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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.