Home / 39,755.04-54,861-21,605.24

Finding the Fourth Proportional to 39,755.04, 54,861 and 21,605.24

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Solution

The fourth proportional to 39,755.04, 54,861 and 21,605.24 is: 29,814.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,755.04 : 54,861 = 21,605.24 : x
  2. Step 2: Convert to fraction form
    39,755.04/54,861 = 21,605.24/x
  3. Step 3: Cross multiply
    39,755.04x = 54,861 × 21,605.24
  4. Step 4: Simplify right side
    39,755.04x = 1,185,284,797.34
  5. Step 5: Solve for x
    x = 1,185,284,797.34/39,755.04
  6. Step 6: Final answer
    x = 29,814.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.