Home / 20,845.80-31,268.84-5,263.43

Finding the Fourth Proportional to 20,845.80, 31,268.84 and 5,263.43

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Solution

The fourth proportional to 20,845.80, 31,268.84 and 5,263.43 is: 7,895.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.80 : 31,268.84 = 5,263.43 : x
  2. Step 2: Convert to fraction form
    20,845.80/31,268.84 = 5,263.43/x
  3. Step 3: Cross multiply
    20,845.80x = 31,268.84 × 5,263.43
  4. Step 4: Simplify right side
    20,845.80x = 164,581,167.86
  5. Step 5: Solve for x
    x = 164,581,167.86/20,845.80
  6. Step 6: Final answer
    x = 7,895.17

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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.