Home / 43,721.12-65,555.76-20,352.80

Finding the Fourth Proportional to 43,721.12, 65,555.76 and 20,352.80

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Solution

The fourth proportional to 43,721.12, 65,555.76 and 20,352.80 is: 30,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,721.12 : 65,555.76 = 20,352.80 : x
  2. Step 2: Convert to fraction form
    43,721.12/65,555.76 = 20,352.80/x
  3. Step 3: Cross multiply
    43,721.12x = 65,555.76 × 20,352.80
  4. Step 4: Simplify right side
    43,721.12x = 1,334,243,272.13
  5. Step 5: Solve for x
    x = 1,334,243,272.13/43,721.12
  6. Step 6: Final answer
    x = 30,517.13

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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.