Home / 20,716.55-31,074.80-5,134.17

Finding the Fourth Proportional to 20,716.55, 31,074.80 and 5,134.17

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Solution

The fourth proportional to 20,716.55, 31,074.80 and 5,134.17 is: 7,701.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.55 : 31,074.80 = 5,134.17 : x
  2. Step 2: Convert to fraction form
    20,716.55/31,074.80 = 5,134.17/x
  3. Step 3: Cross multiply
    20,716.55x = 31,074.80 × 5,134.17
  4. Step 4: Simplify right side
    20,716.55x = 159,543,305.92
  5. Step 5: Solve for x
    x = 159,543,305.92/20,716.55
  6. Step 6: Final answer
    x = 7,701.25

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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.