Home / 10,481.61-15,716.75-5,205.05

Finding the Fourth Proportional to 10,481.61, 15,716.75 and 5,205.05

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Solution

The fourth proportional to 10,481.61, 15,716.75 and 5,205.05 is: 7,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,481.61 : 15,716.75 = 5,205.05 : x
  2. Step 2: Convert to fraction form
    10,481.61/15,716.75 = 5,205.05/x
  3. Step 3: Cross multiply
    10,481.61x = 15,716.75 × 5,205.05
  4. Step 4: Simplify right side
    10,481.61x = 81,806,364.98
  5. Step 5: Solve for x
    x = 81,806,364.98/10,481.61
  6. Step 6: Final answer
    x = 7,804.75

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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.